Took a break from wiring to work on the stick grips. Marked and drilled both pilot and copilot sticks with 7/16” holes for a grommet where the grip wires will exit. Copilots is above the weldment to make removal easier. Pilot stick has a 7/16” hole in between the elevator weld and the aileron weld. Reasoning being the stick forces are higher for the elevator than the aileron so loss of strength in the stick is minimal. Didn't realize the sticks were different diameters so I don't need two sleeves to make the outer diameter of the stick 1” to fit in my Infinity grips. Pilot stick diameter is already 1” and copilot stick which needs the sleeve is 7/8”. Installed the panel and right seat to check for stick clearance of the panel and engine controls. Also wanted to check for a comfortable stick length. Cut copilot stick to length and had difficulty drilling the upper 29/64” holes for the grip. I think I'm trying to go too fast and the steel hardens. Will try again tomorrow. Also discovered that I mismounted the bracket for the Avidyne navigator so is about 1/2” short to the panel mount. Gonna have to remove the nav metal sleeve and drill out the bracket rivets in the fuse as I've already riveted a large portion of the subpanel in place.