Ok...got the word this afternoon that cylinder #1 with 75 psi has a valve problem and cylinder #4 with 115 psi has a ring problem...the shop suggests swapping in another motor...bringing me to another question...

Got a couple quotes...
1) recycling yard with a 1 yr warranty goes for about $1k (>100kmi)
2) rebuilt motor is going for just over $3k with maybe a 5 yr warranty

14 hrs @ $92/hr to R&R the motors.......

Questions...
1) which motor to get? or...
2) time to trade it in for something else?

Thanks