Cleaned up pilot side strake. Applied 2 coats of Jeffco as an added precaution against fuel leaks, etc. Made final fitting of pilot side fuel sender including bending probe. Fabricated more copilot side bulkheads. Determined location for fuel caps near fuselage at highest point of upper strake. Designed an electrical bonding system for fuel caps. Bonding is accomplished by drilling a hole in fuel flange for a 8-32 screw. Attaching bonding wire with locknut. Run wire in groove above lower skin of upper strake aft until it exits the top strake between aft bulkhead and main spar.