Originally Posted by
VS_Rody
Our head-button has a different shape(volume) and to use it with 16% nitro we use 1 copper shim(0.1mm) and 1 aluminum shim(0.15mm)
On short tracks you can try to take our the copper shim to get more low-end power but you will then also have a higher fuel-consumption.
rody would it be ok for me to use the original button head that comes with the 2101?