You should use Balmec spiked feed rollers on it. It makes the head to perform way better than the profiled feed wheels. This would be very useful when felling hardwood. I also know they have the double mounting version for this head, that is mutch more competitive than the standard with. LM doesn't have anything like this :)
It's just the valve shims need replaced but the motor is fine almost all beta engines do that after about 70, 000 miles it's no big deal it will run forever like that
Jeremy Lyons and I assume you just used a 180 degree u bend and a 90 degree 1.5 inch piping and cut those pipes to put a loop in the pipe for 2 and 4 to make them longer and had it all welded?