Congratulations. Now,I'm sure you can see why it is not worth trying to leave the rotor in when changing cones.The cone itself is a handfull to get back in and lined up[the last 1_4" is as much trouble as the first 4']. This way you also get a good look at the inside of the cage,and any repairs there couldn't be done any easier. You talked about getting at bolts on top of the cage;on the axial-flow I used to have,I changed the adjustment of the vanes for several years between corn and beans.I cut a hole about 6" square in the bottom of the grain tank,and could reach where I wanted.I then got a piece of heavier sheet metal and layed it over the hole,and it was held in place by 4 snaps that flip over.Worked like a charm,and that access hole made a good place to get in and clean off the top of the cage when cleaning up after the season. Glad things worked out for you,and now you can share your experience with others that need advice.