Hi,
I am going to be doing my first ever fiberglass & paint job on a GP P-51. I am using a YS .63 mounted inverted. I would like to put an access panel on the top of the cowl to be able to access the regulator and the mounting bolts. The question I have is, do I do all my glass work first and then cut in the access opening, or do I build the access hatch and then do my glass work? I want the fit to be very tight so it won't look bad.

If anybody has any pics of how they did access hatches, I'd be most greatful to see them.

Thanks for any suggestions and any help you experts can give me.

Doug