Probably too late now, but if you use straight epoxy to fuel proof, you can hit it with a heat gun (AFTER it has been applied) and it will get very thin and smooth itself out. It will also cause it to set up quickly, which is why you want to heat it afterward.

For CA hinges, drilling the hole is not essential, but until you really know CA hinges, it's a good precaution to make sure it wicks in far enough. If your hinges are the type with a slot cut out of the center, the hole is not necessary.

Please read this, it has a lot of important info on CA hinges:

[link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=55]Installing CA Hinges[/link]