What Clint said! If there's a secret to a good Monokote job, it's this: do all the "little" stuff first: wingtips, the leadout exits, a 1/2" or so strip next to the fuselage, complete with a neat oval shaped hole for the pushrod exit, etc. It's much easier to place all these details properly when you're not also trying to make the covering fit the entire wing. Now you have a perfect gap between the Kote and fuse, and even on both sides. Then trim off the overhang neatly, and finish up with the large rectangular pieces for the wing. Bottom first, of course. Let'em overlap your wingtip and root strips 1/8" or so. It'll look like you planned it that way.
Galaxy is a great ship. I used one as a sport plane for a few years. Had a G2135. I flew it in WAM's Turkey Shoot in 1995 or so, flew speed limit combat with it, and finally gave it to Clint, IIRC.
Hag