My tacx trainer seems to interfere with my rear derailleur on one bike, and with the hooded drop outs on another bike.

The trainer stubs that fit over the QR ends seems to be to bulky. In the one case after the trainer is tensioned the trainer stub prevents the RD from moving properly and in the case of the hooded drops is too big to nestle 'into' the hooded portion.

Anyone know of a rear QR skewer that has 'long' ends on both ends of the skewer? I think this would solve it but google searches for trainer skewers turn up regular looking (albeit heavy duty) steel units.

Am I alone with this experience? I'm reluctant to 'modify' the trainer itself with some file work as its a long term (not permanent) loaner.

Advice?