Yeah Tyler,
When I removed my armrest before sending it, I also removed the black plastic piece from underneath. Even prior to sending mine, the rear part of it was cracking apart. I took some thin metal and epoxied it over the cracking area to reinforce it. IMO, I would not say Dayle is at fault here, because it is obvious this piece of plastic has some sort of deteriorative quality. Mine was almost crumbling away and VERY fragile.
I really don't think a replacment will be found. If this was a part we could order from Merlin, I would imagine the armrest itself would also be a separately available piece, which it is not. I was actually thinking of getting some thin metal and seeing if I could bend it and form a complete replacement.
Bart