Bubbles in Vinyl Top

I put a new vinyl top on my 68 Dart a few months ago. The install was tough but it came out almost perfectly. I parked my car at Carlisle Saturday morning, then went for a walk. When I came back I noticed a few bubbles. I used 3m 90 adhesive. The shop manual shows how to fix this using a syringe. I'm just looking for a little advice before I try the repair. Any tips or tricks will be greatly appreciated. Thanks FABO.