Hi John

I'd really interested in your Quantum mods. I've had the top off recently with a view to changing caps on PS. Unfortunately I can't entirely see what they are.
Not totally convinced they're original either.Perhaps if I sent a picture you could advise.

Beresford is fitted with 4562 and the ML5/6 mod has been done.
Looking initially at the best source. Maybe the Duet is an option !

Regards
Tony