Thanks, guys. I'm not sure they need to be bored out. New piston and rings might clear the smoke (a simple cracked ring would be much appreciated
). The shop I'm looking at is $50/hr so I hope to keep it under $500.
I can disassemble them in or out of the tractor but am not sure how they would test it. The shop is about 35 miles away so it's not just a run back and forth option.