Chainsaws

Purchased the Poulan Pro PP4218A from Lowes in March. It would not stay running after it warmed up, did maybe 2 hrs worth of work. Next time I used it, same issue. I was beyond the 30 day return policy for Lowes. I called Poulann and took it their authorized center. After 3 weeks I got it back with them teling me the fuel line was loose? When I took it out for another job it would not start at all, wouldnt even fire. Took it back to the same service center and they now tell me the cylinder is scored, it must be due to wrong gas/oil mixture and warranty doesn't cover. Of course Inever had it running so tha makes no sense. Called Poulan and of course they said they dont cover this repair.