First I fabricated a temporary wooden engine frame attached to firewall and placed 30 kg cement blocks as ballast. Last time I had problem when fuselage moves due to low weihgt. Now I have 37 kg load on nosewheel and 40 kg on each mainwheel. Without wings and rudder/stabilizer. Boltholes were first enlarged to 6,5mm, both on wingspar and fuselageside. Wing positioned on two tables and moved close to fuselage. Holes for wiring, pitot tube, and fuellines measured on fuselageside and drilled. To get wingspar end into the narrow opening in fuselage centerspar, I fabricated a simple tool to hold it more open. A 15mm square steel bar, and turn it with 18 mm socket. With wing and boltholes in position, temporary punches was installed. Holes lined up and redrilled to 6,5mm. Wing removed again, and parts stored in new location. But still in garage.
