I have the episodes missing from the year 1992 if you are interested and i would be willing to trade them for some episodes that i have missing from most of the years.
I'll send you a pm Elaine!
Have you had a look on YouTube? I've seen Lists, Matt Has A Baby, Solid Water, and Jigsaw uploaded there. There may be some of the others you're looking for as well.
I want to get the episodes on VHS or DVD Fuzzy. I like to watch them on my TV in fullscreen rather than on YouTube. But yep I'm aware there are eps on there I don't have.