hey guys i have a R33 series 2, the mods i have are 3'' full exhaust system, pod, hybrid intercooler, and safc2,11psi, i recently had the stock turbo rebuilt and hiflowed, anyway i installed the turbo took it for a drive and everything was fine until about 3 weeks later it started to boost to 15 pound after around 5,000rpm and fuel cut and noticed minor power drop down low, i took it down to a tuner near my work and they said it was a wastegate problem, what do you guys think?? cheers.