Yeah the action is a little high at the 12th, i may do what you mentioned and sand down the base of the bridge. I actually bought a roller bridge with the idea of using that but the posts in the wood are too small for it, so in the near future i will create something that fits it and get it in.

Other than that the break angle is all good on the Bigsby but i still need to set the intonation right before i can give it a proper sound test, it's pretty fiddly to do however so ill need a little bit of time to dial it in (or send it to the shop to get right)