[Arran]

Sounds like you guys have some very NICE homebrew tube amps indeed! A good friend previously sent me a old book published in 1957, that has 17 different amp circuit designs by Williamson. It was published by the GEC Ltd in England. The various amps-designs are from 5 thru 1100 watts each. Some good reading indeed! It also has complete parts values listed for each circuit design. The book will come in handy in the future to help me put to use my spare parts if I ever get any spare time. Ive noticed online, that the Heath W-5Ms was a overall favorite over the yrs, ( used williamson design), as well as some rare Western Electrics designs. It amazes me how expensive the new ultra-linear input & output trans are these days! Magnequest, Sowter, Jensen, and other suppliers make this hobby hard to afford financially.
Who do you guys recommend for purchase of good quality new 1% type metal-film resistors in bulk? Ive seen some bargain-bags on ebay, but the sellers dont mention the brand or where made. Most likely China or Mx would be my guess. Anyone ever tried them before?

If I were scratch building an amplifier I would simply order some Hammond transformers through Radio Daze or one of the other outlets, you can email Hammond for a copy of their catalog. My suspicion is that half of the boutique brand transformers were made by Hammond, or one of the biggies, in the first place and relabeled.
As for metal film resistors maybe Dale, or IRC, try a surplus outlet like Mauser. I haven't really had many problems with random bagged types as far as carbon resistors go (if that's what they are) never bought through fleabay.
Best Regards
Arran