I was only able to get about 1/2 hour in tonight, but it was enough to power through the firewall gussets. These guys were easily squeezed with the 3.5 inch yoke, then the 4 inch flat nose yoke for the last two in each far corner. Turned out well, for tomorrow onto more stuff. Like finishing up the top J Channel and adding the rear top skin. You can see in the pic below I have done some work on one of the J Channels. Tomorrow hopefully I will be able to continue to press on.