I have a vacuum leak from a rubber grommet on the tps side of my tb that surrounds the tbplate shaft. it is orange in color and all tb's have em. can this be replaced. or bought? this is an RC ENG. bored out maf on my turbo ireally want to use this tb. who is the one that sells intake man and bored out tbs here Big boost? please help me out vacuum leaks suck for boosted engines.