tree chopper when buying a auto you have no idea what shape its in. It might have a turned bearing, packs or disks might be scored or wore out.
Maybe i shouldn't be so hard on a power shift, i had one for 16 yrs.
The thing is there the best when its working, if you have problems its the worst $$$$$$$$
Driving a power shift, when pulling always full throttle, this keeps it cool and the torque converter locked up. When you shift up don't let up on the throttle, [this is why its call a power shift] peddle down, after you shift up and the motor starts losing RPM , shift back down, you don't want to hear the motor lug down.