I'm going to use skybolts on the sides of the cowl as well, so I glassed in side joggles. This was my first experience with PVA as a mold release, and it worked great. I assembled the cowl, and held it together with a bunch of scrap aluminum sheet and tounge depressors. Appled 4 layers of 2 inch fiberglass ribbon to both side and let cure (one side at a time, seam down so they wouldn't move during cure) I was very happy that the PVA did its job and I didn't bond my cowl together.