I am adding a hex wrench set to my christmas wish list. What are the most common sizes for 1/8 scale buggies? I have a revo and 2 & 2.5 mm seem to be the more popular size wrenches I use. Right now I just us L-wrenches. I am going to get a Jammin X1 after christmas and I just want to make sure that I have a good set of wrenches. Thanks.