Hi JT,
I love regens, very fun to use.
Nothing like the "pop" as the set goes into regeneration.
The 12AT7 project looks like a great thing to get your feet wet with.
Most parts should be readily available, let me know if you need anything, I've some deep
junk parts boxes.
Speaking of regens, if you get a chance to pick up a Radiola III, don't pass it up.
Last fall I had a blast with a Radiola III, and you can find less than mint examples pretty cheaply.
I should also mention that Jan 31 was the anniversary of the death of the man credited with invented the regenerative circuit, Major Howard Armstrong.
Armstrong's original regen and copies of the patents for the circuit can be found here ->
http://users.erols.com/oldradio/eha1.htm.