Wonder if anyone has thought about this before? My theory on why R1 lenses get stress cracks is the size of T-shocks you have fitted. I have been playing around with different shocks on a pair of Romeo and the thicker the T-shock the more stress on the R1 joins at the nose bridge. I have fitted 15's and there is hardly any stress now on the lenses due to lack of movement in the frame. I bought a pair 2 years ago and there were zero cracks even though they were well used. Funny enough they had 15's in! I know that everyone has a different head size, but it maybe something to keep in mind when wearing your precious R1's.