Engine mounts modification continued

Spent 8 hours over two weekends match-drilling the tunnel doublers.

Drilling into firewall turned to be a challenge. In some cases the holes on the doubler got enlarged a bit. In some cases – a lot, so I had to drill another hole next to the bad one.

Now need to order 36 CR3213-4-3 rivets for the engine mounts. Meanwhile will prime both the doubler and the original channel rib.

Made the longeron brackets out of 2mm 4130 steel. spent about 2 hours on this. Now I need to find someone to weld the gussets to the brackets.