We were looking at different pages, one of them with "drive" in the title does have the 45 amp power supply shown.

This should work for the 2A3 as long as the heater voltage requirements are the same with the 2A3 and the 45. Will have to check on that.

Good suggestion about the Group Build Forum. I just discovered it last night and did notice some interest in the 300B. Thanks for pointing me over there.

These look pretty simple, so even "dummies" like us should be able to construct, right? Maybe with a little help from Forty2wo?

Mark