Maybe im not in good of shape as i thought i was, haha
went to the track this weekend and busted out 15 hard laps, balls the to the wall and i was a little tired but coudl have done more, but after about 20 minutes rest i was ready again and i took on the hairscramble trail and its long and windy and very tight some spots, average lap times are 23-25 minutes and thats gettin it pretty good and i busted ass through there and and went back to the start and hit it hard from the beginning and got about half way through and i was BEAT!! hand cramped up, much much harder than i thought.....but i tuffed it out and went as fast as i could...a few more weekends riding hard through there like that i may start making something of myself...i see what meant about your thumb falling off BenBB
havent had that feeling in a while...