I notice quite a few 1-series folks are experiencing fuel gelling in the in-line fuel filter that is under the floor. I've also read instances where the fuel has gelled in very cold temperatures even while the tractor is in use.
It caused me to wonder if the location of the fuel filter could be contributing to the cold weather fuel problems. On my 2720 both the spin-on fuel filter and the water separator are right next to the engine. So while in operation both the spin-on filter and plastic screen in the water separator are getting some heat from the engine. It may not be much, but it is certainly more heat than down under the floorboard.
The same could be said concerning the location of the fuel tank. The 1-series (and new 2-series) tanks are back under the fenders where there is zero heat whereas the previous 2-series are located under the hood where it would be subjected to the heat from the engine.
Now these might just be the mindless ramblings of someone whose brain has gotten cold but it certainly caused me to go hmmmmmmm.