Hey Steve I purchased the Jr Pro Ultimate Package last year and so far I have changed a lot of tires and really got some good use out of it. My question is that just recently I had purchased a set of Dunlop N-tec slicks and the front tire went on like a breeze with my yellow thingy, but the back tire was a real pain in the ass. It took me almost an hour to get that bad boy on. I have since than mounted a couple of rear tire slicks for friends and experienced similar issues. I have notices that using the yellow thingy takes up to much room, and it seems like the tire wont stretch enough to make it over the last portion of the rim. Do you have any tips? To do slicks should i just use the spoon bars? Thanks for any help you might have. Oh also a buddy of mine had an issue at the track with a set of tires I balanced. I balanced it just like on your web site and have never had a problem, but this was his second trip to the track with the same tire/wheel I balanced and this time the Dunlop crew said it was unbalanced and thats why he was getting wobble. I know I did it right, but is it possible from the amount of tire wear that it threw the balance off? This wheel had 7 weights on it from a previous shop when i went to balance it, and with his new tire it took 8. Sorry it was so long. Thanks Mike Camara

Mike, I have changed those before for AMA Pro racers. They have a much heavier side carcass. The location of your valve stem may be a problem. Taking off, put at 10:00 and putting on, at 2:00. If they are custom wheels with a more shallow drop center like Carrozeria they may not go on unless you locate the stem to a position where it does not interfere with the tire moving into the drop center of the rim. The key is in lubing the drop center of the rim well with "Lube Paste" and lube the inside edge of the tire with lube paste where it will slide down and make contact with the drop center between 3:00 to 9:00 clockwise, Be sure the "Handle" is on your mount/demount bar and you are pushing the bar with your hip. This will allow your "Left hand" to be free to collapse the tire into the drop center. You really need to push the drop center "Way down" into the drop center. That is where you are getting your clearance. Expect the tire to "Require" itself to fold under for clearance. Last, the place to lube in the underside of the tire where it is pulling over the rim between 10;00 and 2:00 clockwise. That is where most of the friction is pulling over the rim. They go on. They are much like a Bridgestone Battalax on a Sport touring bike like a FJR or BMW -LT. Whe you get used to how they need to move they get much easier to deal with. The yellow thing tool ,sometimes, can get in the way of clearance. Take it off mid-way if you think it is a problem. I sometimes get calls about the same thing with our Xtra hand clamps. If you were to try to use them the same way, they would not work so well with Sportbike tires. I don't trust the accuracy of the straight tubes they use in the Pro pits for balancing. I prefer the cones. If you think something went wrong, check to be sure your balancer rod is straight. Roll it on some granite or flat glass or check with a dial indicator. Check to see if your cones have been stretched from over use or over-tightening. Your cones should fit snugly on the rod. Those are the only two variables there can be in the equipment. Seating the cones in the wheel would be something to check. If there was a spacer left in it will probably be off. If you used the large cones on a GSXR wheel and seated the cone into the seal it would probably be off. If Lube was applied to the bead seat area of the tire or rim and the tire "Slipped" under acceleration, it would probably be off. I recommend our new Medium cones for all newer sport bikes over the large ones. They fit into the bearings correctly and are easy to use. If any parts are worn, defective or damaged, please send them back to us for free replacement under lifetime warrantee. Another possibe cause of a "Shake", actually "Headshake" may be your steering head bearings loose or worn. Sometimes "Headshake" can be interpreted as wheel balance problems. Glad you like the equipment. Have a safe season. Steve Nemish, No-Mar Tire Changers