HI AFM
thanks for the info. I am using 30% nitro while racing since its what i had got earlier. but this is on the OS TR - T i have. I think i will settle for the 25% nitro and 16 oil that we have from Cool power..... but the problem is while racing that we only have to use the sponsor fuel of 30% nitro with 12 oil from byron !!
In this situation i have to add another shim over the existing shim!!