Cool, let me know how those work for you.
I haven't really done anything with my Princeton, other than put a Celestion Gold G10 in it and change out V1 to a RCA 7025 (the amp came with the stock Fender/GE tubes, and they sound fine, but I like the RCA 7025 in V1).
After the first of the year I'm going to take it to a tech to have the caps and transformers checked. May mod it, may just leave it as is -- even bone stock and in its current state, it's a nice amp. Not a Jerry amp per se, but nice just the same