Checked measuresments and alignment, again. Completed nutplate holes for Intercom, then used the die-cutter to remove the opening, filed, deburred, and tested for final fit.
Trim and file 'small' and miss 'small' ... adjust as it goes.
Then layed out the VP-100 position, again, and checked again. Finally used the die-cutter to remove a rectangular panel, filed, but decided to quit before it was too late to work well.