I've been having over boost issues on my 07 wrx. stage 1 cat back exhaust. ive been reading 17.xx psi and started looking for leaks in the hoses and couldn't find any. I tested the solenoid and it works. I took out the wastegate actuator and tied fifteen pounds to it and lifted it up and it barely open. also the wastegate itself seems free and not stuck. is it safe to say i need a new actuator? input would be greatly appreciated.