Had my Pat's for 3 yrs now. Great unit.
When you get ready to install, pay attention to the spacer thicknesses. When I got done installing mine, I looked at the two spacers left over--sure 'nough, they were different sizes, so I took the unit apart to install matching spacers.
Other thing to watch for: When roto-tilling, I went over a big clump, with the tiller deep. The PTO came apart! So be sure to check your PTO lengths after installing Pat's. There's not much excess in our CUTs, so a few inches is 'portant.
ron