cam lean. pocket twist. limb crack timing issues (yes solo cams do need to be timed) roller gaurd problems
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damn. I have yet to have any of those problems with a mathews, biggest issue I've ever had was the serving on a cable getting tore up, and that was caused by a burr on the cam which they replaced. I'm happy with mine so far, time will tell if I have to deal with those issues in the future.