Just has difficult to insert as on the front side except now we now how to approach it.....tap tap tighten..... the back half is much deeper and almost requires to go around at least 3/4 of the rim ......block off with wooden block then come back to push it down evenly. The foot is long enough to unrim the tire.
Eventually the tire gives up and the rim comes out......
Yes it takes arm muscles....... and on a real tough nut like this one and being the first we did about an hour....... it took melonger to edit, resize and post the information.....
Next our observations after the fact......and conclusions.