Almost all the way...
I got tired of the whole leaking mess and some bad cracking on the sunny-side ports. My P.O. must have either never moved the boat out of the slip or kept her blocked.
I called Select Platics and spoke to a very helpful person. Got all new lenses, o-rings and gasket material for the rims. Took everything off (I used a screw and destructively removed the caps by screwing into them. Who says a polished Phillips-head is not as decorative as a black cap?)
Cleaned all the plastic parts w/ vinegar solution, inserted new o-rings w/ light coating of ptfe grease and recut all gaskets for the portlights. GLued the ends together with some 3M (Scottweld?) stuff and put them back into the portlights with a bead of silicone in the cleaned-out slot. Voila!
I also covered the expansion joints of the portlights (outside) with a black butyyl-rubber type (Sikaflex?) gunk. Just put a seam over the drying and shrinking plastic in there. Done!
Result: With the exception of one portlight all are now tight as evidenced in the recent NorthEast biblical rainstorms. I suppose the one that is slightly weeping is either sloppy work
or a bigger issue. Todate I have NOT rebedded the frames. Many of the screws are frozen into the outside frames and would have to be cut... Not my thing right now.
Hope this helps someone with a case of the dribbles...