I feel your pain, run into the exact same issue. Ordered two both claiming to be 3/4 & 1 ton; both clearly 1/2 ton. I haven't tracked down the correct size yet although there was another post on the subject and he listed a vendor that also has the .921" (FCRC Machine). I should probably try again to order a set - third time's the charm right.
HRL when I get around to mine, happy to donate the old ones if you don't have any then.
