Pearson 303 Port holes/Port lights

Apr 8, 2020
7
Pearson 303 St Petersburg, Fl
I recently bought a 1984 Pearson 303 and the 4 forward port holes leak. The plastic ridge on the lens/window itself that the knobs grab on to have broken off and the previous owner just used large washers to try to make them hold.
Anyone know what lenses/windows to replace the broken ones with?