Anyone happen to be using Conti 5000TLs with Easton R90 rims? I cannot get the tires to seat, even after letting air out to add sealant. I've used gas station pumps, C02 carts, the Bontrager TLR Flash Can at 160 psi. Nothing works, and each time I have to head off to the LBS for help.

Is this a bad wheel/tire combo or am I missing something?