I have a cheap trainer (http://www.ebay.com/itm/Aosom-16b-Bi...-/110723747481) and a not-so-cheap bike (http://www.specialized.com/us/en/bc/...01&scname=Road) and the two are not getting along. I bought the trainer last year after my first full season of cycling. It worked fine all last winter... w/ my Crosstrail Sport hybrid.

Fast forward to the present. I cannot keep my new Roubaix firmly mounted in this trainer. I've fallen out of the trainer 3 times in 2 rides (not fun when clipped in), I never feel level (seem to be listing slightly to starboard) and the bike feels as if its working itself loose in the mounts. The plastic insert inside the left side mount (which fits over the "tightening" clamp on the rear axle) has suffered some wear/damage, I assume from all he miles put on it last winter w/ the hybrid.

In addition to being frustrated as all hell about this, I'm also concerned about damaging my not-so-cheap bike in a cheap trainer. I use an all-steel training axle while on the trainer, but is it possible to clamp the bike too tight in the trainer? I don't want to damage the frame due to intolerable torque or stress.

Can y'all help a noob out? ADVICE, PLEASE!!!