I've followed the recent post concerning inlet manifold leaks causing symptoms similar to a dead cylinder, and found the same on my B20B twin Stromberg. The carb cleaner was finished, and I will not buy any more since it destroys the diaphrames, so I've used my highly flammable contact cleaner. It's very effective! Anyway, on the one side a nut is missing, but the leak was actually worse on the other side. It has never been removed in 32 years, so I'm thinking of sending it off to a workshop in case I break a stud, or would it be OK to do myself? (I'm an electronic engineer and learn as I go.)

Any other suggestions of things to do while the inlet and exhaust is off? It is a "seperate" manifold set-up.

I've done the carbs early this year (gasket kit), except for replacing the needles. Could not get them out. Any suggestions? Only 112 000 km or 70 000 mi. Plugs burn clean/perfect since carb job. Will probably do valve cover gasket job at the same time.