Used laser level to double check fuselage leveling to wing - everything seemed within 1/16" level. Wings were within 1/16 square to dims on plans to rear tailcone corners... so set up for drilling. Did 1/4 forward drill through spars & forward attach angles, then 1/4 back through rear. Then the Big 3/8 step drill through everything. Came out beautiful. Special drill made at work was perfect. Disassembled and deburred,