Well, i got the part from Orange in the mail today. For the life of me, I can't get the mushroom peg to turn either. I see where the outside of it's hole has the octagon shape that the peg does and assume that it is supposed to expand when you turn it and then slip into place within the octagon. I will have to have another look to see how to get it moving again.
I had worked on this right after getting home from work and my hands were still grubby.
Now the broken joint wasn't too much of a chore to patch up. I just cleaned up the dried glue where orange had glued it together, fit the pieces together and held them In place while I used the pin-vise to drill a hole from the outside of one half to the outside of the other half on both sides where the breaks were. I then cut a length of craft wire long enough to penetrate both pieces but not extend beyond the outside and super glued both pieces of wire prior to inserting them through the drilled holes. after pin insertion, I added more superglue to the joint of the break to fill the crack and to the top and bottom of both sets of pin holes.
After using some CA glue accelerator to quicken the bonding process, I filed the break points smooth and then painted with Model Master flat gull grey which was a pretty close match to the plastic color. These shots were taken prior to the paint drying and the paint darkened a touch as it dried.
The broken joint should be good to go now and is probably stronger than when it came from the factory.
