Does anyone have a spare left arm for G1 Optimus Prime?

My Mom, god bless her, ordered a loose, 100% complete G1 Optimus Prime from eBay for my birthday. I'm very pleased to finally own one, but one of the smokestacks broke in two during shipping. So I glued the smokestack back together and then glued it to the left shoulder. Unfortunately, the glue disabled rotation of said shoulder, which was fine, until this morning, when I found that, even though the glue hadn't affected the elbow before, it's now also preventing rotation at the elbow, rendering the figure impossible to transform. The only solution I can see is just replacing the left arm entirely, so if anyone has a spare left arm they can sell me, preferably with a long smokestack, I would be very grateful.
PM me for price negotations.
PM me for price negotations.