We are in the process of dealing with valves that are not sealing all that well on a new overhaul. When regrinding the seats and valves, I remember seeing an article that talked about the seat surface angels being slightly different by a degree or two. Doing so will affect the contact...
There are two references to a voltage regulator for the 5 brush powerhouse above. I have a 5 brush on my 28 Leather Back which is giving me fits with burned bulbs and likely at least one coil with what I believe are high voltage spikes.
I am seeing running voltage in the high 6's to low...