Hi Dan, Do you want to know with the auger up or downIJ Actually I have no square shaft exposed. We have a 98 R42, the auger is the 11 1_2" diameter one. I am still concerned about what you said on the return to the saddle. On how hard it sets down. Is it suppost to be soft. I ask this due to it does not seem to be setting any harder than before I adjusted the chain. An on that note. I re-read the service book and the chain is suppose to have .5 to 1.5 inches of slack, ours had about 2.5 so when I took the slack up I made it stop just before the normal stop would be. And actually the tab that the sensor for starting the auger unload lines up better now that originally. As far as the Stewart Steet Extender. For us it was a good thing. I'm much less tense pulling up to our grain cart. BUT, with out adjusting the stop on the auger the extender only gains 2 feet horizontally, not into the air. So far I am ok with this set up, but I am interested in that cylinder stop. Thanks, Dan, If you have an email address, I have a few pictures.