Originally Posted by RknRusty
Yes, I did my first crank and break-in run on my .061 Big Mig with an .049 Bee head and 3 shims. Made it a lot easier to crank before I got a starter spring.
Norvel snap starter spring is a nice upgrade. My Big Mig .061 Revlite was shipped with 2 copper shims under the Norvel glow head assembly and it came with extra shims to boot. (I don't know if Norvel does that now.) I bought a couple extra springs along with several RC and several CL tanks sometime back.
The tanks are a nice upgrade, helping to keep fuel feed line short. About the only exception is that it makes the engine assembly extra long, which leaves one to revise the engine firewall location or leave engine sticking out further in the breeze.