You guys are supposed to be airplane builders with skills to build composite parts. Fabricate a small box with the appropriate slant to it for the shims you need, then lay up a shim with the dimensions you need. If it's not quite right, you can grind, file or cut to suit yourself. Do a test fit to see if it's right, then when you install it, bed it in a thin slurry of milled fibers for a no slip perfect fit. If you have to go a bit oversized on the holes through the gear leg to get a proper fit (and keep the bolts straight), grease your bolts up with wax (so you can get them back out and backfill the holes with a milled fiber slurry.
Additionally, try to drill things so your bolts are straight and use a set of self aligning washers on the side where the head of the bolt or nut appears to be an an angle to the surface. Self aligning washers are a pair of washers, one with a concave surface and the other with a convex surface. The concave surface of one washer sits on the convex surface of the second washer allowing them to cock off sideways from the bolt head and adapt to the surface of the gear leg. When you pull a bolt down onto them with a hole that isn't normal to the head of the bolt, the two washers will swivel a bit to properly distribute the pull of the bolt onto the surface without side loading the axle attach bolt. Just google "self aligning washers". I used this technique to repair the landing gear on a GlasAir that had the gear badly misaligned, then the holes overdrilled and the bolts literally bent in the bolt holes hanging onto the axles. -Jeff Scott Los Alamos, NM
