Our old 2002 5ver has an Thetford Aqua Magic hand flush. I HATE IT. It is low and you have to bend and stare into the toilet's contents while flushing. WORST is that the thing does NOT fit my anatomy. It is like sitting on a bucket.
Anyway, thinking Dometic 310. Have had two previously and I know the water valve is a sore spot where fails can happen so I will buy a spare BUT I have never made a conversion. I saw on a couple sites that the 310 has an "installation kit" which contains a plastic ring which serves as some sort of adapter and holds the two retaining bolts/nuts, new bolts/nuts and caps and a new seal.
If you have made this Aqua Magic to 310 conversion, was the kit needed? $50 is a lot for what is included. TIA wg