I purchased a 743 with the engine completely torn down. got it rebuild and put back together. I got about 3 hours run time on it before it exploded the u joint in the coupler. It was a new u joint and was greased. I did some research on the cause and it mostly came to the pump alignment to the engine. So i tore back into it and measured about 9.5" to the center the the yoke and about 10" to the center of the flywheel of the engine. The repair manual calls for both measurements to be around 10". I removed the pump mounting plate and each side had 3 washers/shims. I got new bushings on order and I will be able to get the pumps height correct but how do you adjust the left and right movement. I'm hoping to have it back together for a lot of work on labor day weekend.