Dumpster dive behind the Harborfreight for a few free motorcycle lifts... Do a couple weld reinforcements and done deal.
I had an HF ~10-12 ton press bend like spaghetti trying to press out a bearing. So, like their jack stands, I'd wager that their is some serious mis-engineering issues, quality problems, or pathetic manufacturing. You just can't push junk beyond its lower than expected limits.
I will say they make the best 'single use' disposable tools out there.