[pestes]

I did end up calling Fantastic Vent / Dometic late last year. Without any question, they sent me 2 upgrade kits to the 7350 model fan. The kit includes lift motor, new lift arm, the bottom face with electronics and a remote. The downside is that my fans are no longer controlled with the wall switches, but the plus side is there is enhanced functionality - speed control, temperature based control and also a rain sensor. The upgrade kit was easy to install, and my fans work flawlessly every time now. Amazing that they send $400 of kits out for a 20 year old vent!