Tonight I messed around with the side skins on the canopy trying to see if I could minimize the gap between the canopy side skin and the fuselage side skin. Eventually I decided to just go with the existing skins and worry about the gap later, if it’s an issue.
I moved on and measured the thickness of the canopy on the sides to determine whether I needed the use the supplied shims. If the thickness is less than .17 of an inch the shims are required. On the right side I measured between .158 and .17, and on the left I measured between .147 and .158. The thickness varies along the edge, hence the ranges. So it looks like I’ll be using the shims.