Gas block removal

[bigchief]

I am putting on the trx 13.8 and the gas block roll pin is being a pain. Any trick in getting this off, anyone know the roll pin size? Don't think i will be able to reuse and the troy low pro block didn't with any Thanks in advance

 

[wayne in boca]

5/64 X 1/4,but you can use up to 1/2" long no problem.