Ok, so Im sure I will hear all kinds of flak for posting this, but please read first. Basically what you are doing is adding extra spring tension to the WG actuator. Its conceptually the same as installing a Forge actuator and a stiffer spring. You can calculate how much you are adding, so although it may look a little jenky it works very well. The guy that wrote the following is a good friend, and a VERY knowledgeable guy. For you reading pleasure, I give you..
The waste gate actuator spring mod..