just bought a stihl 390 off the list and only paid 30$ came with bar and chain so i got my $ out of it already. started to take it apart to put new cylinder in it and i'll be danged if it is not the hardest saw to work on i have come across. you have to take the whole thing apart to get a new cylinder/piston in it and I mean the whole thing. the 4 bolts on the bottom that take the cylinder off are seized bad they broke 2 #27 torx bits and i guess now i am going to have to grind them off to get em out. what a pain. I guess my question is, is this saw worth fixing?