The final steps were the attachment of the rear backplate to the new PCB and soldering in the RF, Relay, and ALC leads (pictured above).
The completed assemble (above) only needed a couple more re-solderings. For example, I always wondered why my 10m transmission using the amp was problematic. Note the coil on the right side of the photo. That poor solder job to the tap on the left is for 10m (note the brown resin everywhere). The solder joint broke...it was barely touching! So, fixed that. As an aside, note those beautiful Taylor 572B tubes. Yep, I replaced the original 811As long ago.
And it works, hallelujah!