I sanded down the filler on the lower cowl, then removed the tape and sanded across the joint to get it flush.
I’m really happy with how this turned out. You can see here just how flush the joint is. It sort of looks like there are two joints here, but the upper line is just the edge of the fiberglass tape that covers the row of rivets along the edge. The actual cowl joint is the lower line closer to my thumb.
