check the shop manual - has a bit about it, including pre-checking the fit - the curves do vary - have the rope at the bottom to start, and put that in first - yes, difficult, and almost impossible w/o a helper on the outside
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics