Where to get a bezel insert for GMT 2234.50

[mars08]

I've got a 21j GMT with the two-tone bezel (misaligned, of course).

Today I tried to realign the bezel insert by heating the watch (a lot), but it will not move. My guess is that the only way of getting this rep to look right is by destroying the bezel insert and fitting another.

I've also read on this forum that the gen insert is NOT a good fit on the rep bezel.

Does anyone know where I can source a bezel insert for a 2234.50 GMT rep?

Found one on ebay, but I'd rather get the opinion of someone who has actually DONE it.