Limiting centrifugal advance?

I have a "remanufactured" electronic distributor on my 318 and it gives the engine too much total advance (about 40* not including vacuum, maybe more). I took my dizzy apart and I see the part that is supposed to be filled with something in order to limit the travel of the weights. However, I tried soldering it and the solder just would not stick to the steel of the advance plate. If there is a way besides welding I'd like to know as I don't have immediate access to a welder...
Author: admin