I stumbled on a cs-590 i got for $50 with a stripped spark plug hole, planning to take it down and use a thread insert to repair the cylinder. I also own an 034 super, which has an oem cylinder but did get an aftermarket piston a while ago. its been tempermental lately and needs the carb gone through. with these two saws being similar to one another i think id likely only keep one of them, but im not so sure which one would be the one to keep. in addition to these i have a husqvarna 440 running a 16" bar, a 372 clone with a 24" for the occasional larger tree, and a $60 zenoah clone that while lackluster in power has been stupidly reliable. Nearly all of my cutting consists of helping my sister with fallen stuff on her 20 acres for firewood, limbing around the yard, and taking the little husky out on a camping trip once in a while. Any suggestions on rearranging my lineup of saws here to something that might make a little more sense for my situation?