I feel your pain on the cost for mounting them. I now take it down and have them break the bead (for free) and then use large screw drivers and a bar or two and take it right off. If you take your swampers off then you should have an idea about the ATC tires. It helps to have something sticking up from the middle of the wheel to push against.
Just poke it, it will get better!
--Honda--
'83 110 - Good times!
'84 125m - Electric Start! Yeah!
'82 185s - Its got ball...hitch. Gotcha!
'83 185s - Parting (Frame, Foot Pegs, etc. PM for parts.)
'85 200s - Other Play Toy
'84 200x/s - Nice Kick! lol Kick Start That Is!
'86 500cc - Yeah, this trike has a hemi!! (Now in conversion from the Kawasaki Frame to the 350x Frame.... YES!!!!)