hey guys just got the gt lpf 2.0 was running 1.1 in my 008 xray foam car I'm trying to find out my gear ratio for 13.5 foam .i heard that you need to take teeth away on the new speedo so this is what i was what i had in the car 98/38 on 56.9 tires . also what settings works best on the speedo and what timing on the motor. the motor is 13.5 duo thanks for any help you can give