I sold mine after I found they required more attention than I could give them in order to keep the group sizes where I was happy.
Could you elaborate on that a bit? What sort of attention?
One of the big issues is timing the gas lock, if it needs it mine does not , a shim kit can be bought reasonably.
Springfield has a great warranty if you need it.
go here M14 Forum - M14 Forum for M14 M1A Rifles for the shim kit, and anything else you can think of for an M1A. Bunch of great guys over there that will help you out anyway they can.