A couple of things to consider. I checked the screws holding the ladder on our Axis and found a couple had rusted through. I replaced all of them with stainless steel to prevent a similar situation in the future.
Rather than attempt to remove the portion of the two screws that remained in the motorhome, I rotated the attachment bases 45 degrees and inserted the screws in a new location.
Also, as a result of a serious step ladder injury to friend, we now do not use any ladder, including the one on the motorhome, without someone at the base "spotting" the one person on the ladder. This is something we learned when our children participated in a community circus. The key is not to try and catch the person if they fall, but to divert their head away from the surface so that they bust their butt, not their cranium.
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