Factory RV Surplus
Depending on what is wrong I did a very good job splicing my ladder. I pretty much bent mine in half. I cut above and below the bent part and replaced what was there. Removing the ladder, of course.
It is as sturdy as new and the repairs are difficult to detect. This place has ladder parts which I found to be fairly generic. They sell you the tubing and splices which go on the inside. Works very well.
There is reinforcing where the stand off fits so it is best to hit the same place and then you do not have holes to cover.
The key is pop rivets and a pipe cutter and a good measuring tape. There were roll pins holding the steps in place they went on one way; but I figured a way to back them out and wound up using the same pins.
This was not a difficult job and the parts were inexpensive.