grumpy, its a new engine, the problem is that not being able to mount it with nut/bolts, I had to tap threads into the holes ( been told its a cost-cutting thing with Kohler not threading the holes). The 2 hole front holes were fairly easy to do but the back one was a nightmare - there is very little room under the Cox to maneuver with the steering gear, chain... problem is to get to the rear hole you need to remove the drive pulley off the engine BUT you need to tension the belt by positioning the engine.... catch 22

so much easier to push a bolt up from underneath & screw on a nut.....

btw one of the back holes is set for a nut/bolt, not a blind hole