Yesterday's .5 hours of work is included in today's writeup. I epoxied a strip of fiberglass to the backside of the upper cowling Skybolt holes to support an epoxy/flox mixture. The holes were offset too much; ranging from about 1/8" to 1/4" and slightly oversized, causing the retainers to not be properly aligned. (All my fault for trying to get the gaps to perfection.) Today we drilled the remaining holes on the bottom of the lower cowl and fastened the retainers and nut plates to the appropriate flanges. With the lower cowl secured in place I installed the upper cowl and placed an epoxy/flox mixture into the holes to "shrink" the holes, as mentioned above, into the right position and right size. Time to let the flox set before I right size the holes.