I have the sram 3.0 RD. I can not get it to stop skipping. Ive had it adjusted 2 times. Every time I put pressure on the petals it skips and grinds. Is there a common problem with it or is it just a crappy derailer? I broke my chain today at CR and used a sram power link to fix it. Could the chain braking have anything to do with it?