Nice job Magik!! I have A 1984 Tioga (paid $1500.00 for it) that I have been going through although not as fast as you but mine is livable so we use it more than I work on it. Roof leaks ate me up for a year I finally just Eternabonded every roof joint then mopped on elastimeric sealant on everything up top.
The Biggest Problem I have now is that I cant stay at any KOA's and alot of other camp grounds because of the age!?!?! Most will only allow 2000 and newer MH's no matter the condition, Some will allow my 1984 after I send pictures so I spend more time planning a trip than I do on most trips.
Any way sound like your enjoying the time invested and that is what it is all about!!!