i have an echo srm 260 that was running poorly it sounded half throttle at full throttle, I thought it may be the carb so I bought a replacement and still had that problem. I decided to run it for a bit and after a while it throttled up like normal and died. Now when I pull it it the compression feels weak. Is this come thing worth trying to fix a ring will be $6 or a piston kit is around $60 both of those options sound better opposed to the $300 for a new trimmer.