I'm having a few teething problems with my 1930 Francis Barnet Black Hawk. It's proving difficult to tighten the Villiers carb onto the manifold. I had self amalgamation tape on originally but this dissolves in the fuel. I tried a 1mm plastic sleeve which was too thick also .5mm thick shrink sleeving, also too thick. The manifold doesn't appear worn ( still has casting marks) but is around .5mm under size and the carb clamp can't close enough. Was there a .25 sleeve originally? Any suggestions gratefully received.
