If you decide to do it yourself....advice....
Just finished mine too....84 H31. First, you should order Peggie's book. Then search the archives under Peggie's forum which is under....Message boards:Expert Forums: Make sure you order the OdorSafe (i think it's called) hose which is far superior to any other, and for the same price as the cheap stuff you'll find locally....I think I paid $5/ft. and used about 25 ft. DON'T BUY THE GREY FITTINGS AT THE HARDWARE STORE WHICH LOOK LIKE THEY FIT, cause they don't. Get the fittings from the vendor Peggie recommends. I re-routed some lines and it's much simpler and has all the same functions as before....and no odor. You will knock all the bark off your elbows and knuckles, but just hang with it and it's not quite as bad as you'll think.