Re: resealing "Old style" Lewmar Portlights
My experience is with Beckson portlights, but I have to agree with Gladrags--be careful, don't pry up a portlight unless you have to. I rebedded two leaky portlights last year because both were leaking around the frame. Just as you plan, I used a thin putty knife, but I had to pound on it with a mallet to cut past the bedding compound. The effort it took to pry them up made me worry that I had hurt the seal with the lens, so I ended up tossing the old portlights and putting in new ones. I didn't want to go through all that effort (which included in my case replacing a wood panel inside) just to watch them leak again.
2000 Beneteau 331
Northern Chesapeake Bay
Ambition is a poor excuse for not having enough sense to be lazy ~ Steven Wright