I just had my Shelby trailer jack go south on me. It doesn't crank up or down. It appears to have plenty of grease inside, and the bearings are turning. I've even jumped up and down on the tongue! I have been looking at new ones to replace, but I'm unsure which one to go with. My prestige trailer has an welded mounting spot for the jack to go.

Any suggestions on how to fix mine, or where to buy a new one??

Thanks,

Derik Taylor