How well do you understand the Alde Heating System?

Probably get more votes if you move this out of the for sale section.

Considering I've now replaced 2 thermal fuses on the motherboard, done the propane restriction for high altitude and replaced the glycol 2 different ways,  I'd say I'm about Alde tech level. 

I understand the theory and engineering involved, and know it’s operation, and basic troubleshooting.  I leave servicing repairs to my local nüCamp dealer technician. 
 cheers 

@Calvin - the poll was moved to the appropriate cataegory.

Give yourself some credit @GigHarborTom!  You found a great resource here at the Forum!

Why would so simple a system be so hard to replace the heating fluid required by the manufacturer every “now” two years to change???, and why cannot the dealers, who now are making the vast profits on sales to be trained in changing this crappy fluid and heating system. At $500 plus to change the fluid a small electric turbo heat exchanger with a thermostat for $150.00 would be a better option, what I use!

please tell me why ?