Big thanks to PAT! from forge motorsports!
 

Bought a Forge BOV from the classifieds here. Once installed I was getting compressor surge at lowish boost and a partial blow-off at high boost. Sent PAT! an email describing the problem. He had me check a couple of things, in the end it turns out the BOV had too stiff a spring.

PAT! is sorting this out for me even though I didn't buy anything from him. Awesome guy, he'll have my business in the future!

Jay