4x6 Horizontal Bandsaw Is Locking At Worm Gear

[staybusy]

This used bandsaw I bought did NOT enjoy cutting 1" x 10" steel plate, now something is wrong.

When the blade makes connection it jams up, I traced the issue back to the worm gear, the gear itself and the shaft aren't remaining attached to the pulley once load is applied and are locking up or have broken free or something.

Any ideas on the best way to fix it?

Video showing the problem https://www.youtube.com/shorts/bzsJniblUVQ