Hello all! I'm new to the forum. I got a Stihl MS181 with seized piston. First tried to revive cylinder but no luck As these are very cheap saws I decided to buy a cheap Chinese cylinder (including piston etc. ) for $20 on eBay. After rebuilding it has low compression about 90psi. I starts, but has very low power, even for a MS181 J Can I do something to fix? Try to hone it? Or was it a waste of money?