Larry,
FIrst, I'd like to let you know I took no offense at your post. You should, however, get a job coaching those people on the television commercials that make the simplest things look impossible to accomplish without whatever product is being hawked. ;)
Second, those scissor jacks are flimsy. They are also what came on the camper. I do own a set of jacks like you describe. They came with my first camper, which did not have scissor jacks. I used them at first, but they have their own set of drawbacks, which I'll not go into here, as I see this as a discussion rather than a debate. Anyway, I went to the junk yard and purchased four scissor jacks from wrecked cars and installed on my camper, which I always thought worked quite well.
As I said, this camper came with the scissor jacks. I would have preferred the newer single leg angular jacks (don't know what they're called), but I got what I got. They came with a socket on the end of a long handle that I use to crank them up and down with. Works really well and doesn't require batteries. The locking nuts on the strong arms are the same size and use the same wrench. Also, those nuts won't fall out. They do not have to be tightened when in the stowed position. They also do not require any special cleaning or lubrication. When I clean the undercarriage of the camper, they are right there and easily sprayed off. They take all of 5 minutes or less to deploy, do a great job of stabilizing my camper, and I like 'em.