Hey Bob, Send me your email address and I will forward a copy of Tim's detailed instructions. I have the CNC firewall & the footboxes, I had no trouble at all with the firewall fitting properly or getting it straight to meet the top edge of the boxes.
I did have to move the "A" shaped vertical tubes that extend from the cowl hoop down to the main 4" tubes. I had to move them toward the center approx. 1/2" each.
my email:
karlmckeever@verizon.net
Later, Karl