Beading the 335's

[ka67_72]

The only place in town I could convince they could mount my tires couldn't get the 335/30/18s to bead. They didn't charge me for mounting the fronts or halfway mounting the rears. I brought them home, put a ratchet strap on them and they're holding air but not beading completely on the outside. I've never delt with a competition tire so I stopped adding air at 60 psig. The sticker says not to go past 44. The tires are toyo proxes ra-1's. Do any of you have experience mounting these things?

Thanks,
Kevin