I have this reoccuring problem with the master cyl plug on my '66 bug, with stock mc. The black rubber plug which the tube from the reservoir feeds into leaks. I have replaced the mc, the plug, the plug and the mc and still iget this leak. It will go away for awhile and then comes back. Anyone else experience this? I am ready to switch over to the safer dual system. I imagine it is a bolt in right? I just need to fit the reservoir in right?
--Dan E