I'm still skating on my original pair of CRS frames. I bought two pairs from Thisissoul's web shop years ago, second pair is still in its box. I had to file them down to fit the axles and parts correctly though.
I had the same problem. Wheels felt like they were going to rattle right off. What worked, in the end, was a set of 50/50 axles. I hope you get to skate your new frames.
i need a pair of small crs cores. i have two pairs of the large white frames. i like them because of the feel, but i’ve been bucked off landings from the rebound.