[cliff]

To all the carb experts out there, here is the problem.
I noticed that all the main venturis in my Dellorto 36 mm carbs were spinning and not fixed. I check and there are no main venturi attachment screws. I checked in the tech book and the dealer and this is true. Only the auxillary venturis have securing screws. I also noticed that one venturi had dropped down and has probably bored its way down. The carbs run fine and have not had any problems. Apparently the venturis are just supposed to sit snug in the bore....is this true. If so can some high temp silicone sealant be used to fix the venturis so that they don't spin. All replies are greatly appreciated.

Thanks