what kind of runtimes is everyone getting in there buggy and truggy with .21 promokit im struggling to get 8 minutes.i have no problem getting past this with my 2 v-specs.plus my one grp engine lost rear bearing after one gallon.any info would be great.temps are around 210.as of now i have 3 grps running two of them now and one in the box.if it doesnt get any better im going back to os.