Leave it clekoed to the straight edge for at least a week. Two would be even better.
The longer it sets the stronger the bond.
I don't think the rivets need to alternate. Just take your time. Partially set every 5 or 10th while checking the edge then go back making passes till all are partially set. Do it again till they are fully set. Keep watching the edge. It will be perfect.
Estes Park, CO
wirejock at yahoo dot com
Donated 12/27/2018. Plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.