I rode my first bit of natural today. I must say I have the utmost respect for all you guys riding it so well. It was the most fun I've had on a bike but its so friggin hard! I kept getting hung up on my frame though, maybe once I get a smaller one it will be a bit easier...but does a longer frame make natural easier? Another question..it may sound stupid..but what do you do for a tube on the rear of a mod? I cant seem to find tubes for 19" rims or do you just use a 20"? And does a HotS 2.2 work ok for a rear? I was hoping to get a booster and tire from the same shop instead of having to order from different places, and both places I found a 4 bolt doesnt carry 24.1's I cant seem to remember the rest of the things i had to say..but heres a start.