Hi Mark, yup, that 16" Channellock is too big and too heavy for little person (me). :p
My husband is not a handyman at all, so he knows nothing about tools, just me. When he asks for a screwdriver, he says the "normal" one. Huh? I ask, "Phillips, Robertson, flat"? :D
I think I can file out the plastic end of the flush valve and that huge locknut. I think that's much easier than a hacksaw (tad scary!). :eek:
I turned enough of the locknut with the Channellock that I can actually stick a thin screwdriver into the toilet between the locknut and the tank, so I'm very, very, very, VERY close to getting this confounded thing off. :D
I will keep you posted.