if its hitting then you have no choice.
Moving it slightly further away won't have a very noticable effect on wastegate operation. A rule of thumb though, the less distance and the fewer angles between the manifold and wastegate, the better. And you hook up your boost reference line to the bottom port on the wastegate.
Currently #4 in Ecotec Forced Induction horsepower ratings. 505.8 WHP 414WTQ!!!
Currently 3rd quickest Ecotec on the .org - 10.949 @ 131.50 MPH!!!
thanks for the info ROOFY