I will try the cleaning solution and see how that works. Luckily, I have 2 other 802-8G's sitting on the shelve so I can get the system up and running.

I'll put some effort forth to see what I might be able to do. I'm curious to what extent I might be able to potentially get it working - although very concerned that the internals are rusted extensively also.

Learned my lesson - always open up and inspect both diaphragms.