Do you have a voltage regulator (either internal or external)? That's
probably where I would look based on everything you pointed out.

Oh yes, it definately has a voltage regulator. A BIG heavy one. (I never saw a
'generator' with an internal regulator. Wish I could afford the alternator
STC). Admittedly its been some time since I worked on 'generator' voltage
regulator circuits. Any suggestions on what to look for? Are Delco Remy
aircraft regulators the same as the automotive versions for 1/3 the price?

Jim