Today I set about installing the rails for the ground adjustable rudder pedals. I immediately noticed that I had drilled every hole to the wrong size. The center rivets were all #30 vice #40, and the end rivets (BSPQ 5-4) required 5/32 drills. Installing the BSPQ rivets was a challenge as the offset locations required me to grind the hand held pop rivet squeezer even further. I also had to grind one of the removal heads to reach all 4.