I continued to rivet the spar today. The spar has started to take on the ubiquitous curve that most people get. My attempts to keep the spar straight by riveting in different locations seems to have lessened the curve but did not eliminate it.
I had to modify another bolt to fit in a tight spot to rivet a stiffener angle, There was not much room between the angle and the spar cap. I was able to grind down flats on opposite sides of the bolt head. This allowed me to fit in the tight space and pound the rivets.
Bolt head ground flat on opposite sides to fit in tight space.
Not much space to rivet between the spar cap and stiffener angle.
