Hello, I have an 02 WRX STi with an ej257 conversion which I just had serviced on Friday. The mechanic told me the Harmonic Balancer is vibrating and suggested contacting the place that did the coversion. Is it likely to be the Harmonic Balance that's at fault or is it more likely something else that's connected to it? Would I need to look for parts for an 02 STi or for an ej257? I can't exactly take the car to the place that did the conversion if they ended up needing to check it either, I live in Albany and it was the Japanese Wholesalers in Perth that did it. I'm sort of lost as to where to look to in terms of getting this fixed which I want to do asap considering the mechanic said it could wreck the motor if anything happens. Any help would be greatly appreciated.