When we purchased our motor home the front jacks were bent towards the rear of the coach. We determined the previous owner or the sales outlet had the jacks down when transmission was placed in forward gear.
It took a lot of talking but we prevailed and the sales outlet brought the coach into their shop, unbolted the bracket holding the front two jacks, heated it and straightened. It. Reinstalled and everything is fine.
Are you sure yours are welded onto the frame? As noted, ours were bolted.