Just found this about the roller i have the same, i see there is a can of easy – start on the roller. to help start a engine be it my tractor or car or small engine i use GT85, less chance of blowing the head off,
We have quite a few Trac Grips about ten down here in cornwall and not heard anyone say anything about a club for them. i am 20 miles from where they were built at kelly bray, Thats incluiding two with the diesel engine fitted from new. a friend is rebuilding one with a diesel engine