I will answer some of the questions.
What happens if you put the slide out just part way..
Sunsine.. Nothing bad. oh there is some air leakage but nothing bad
Rain. You may get rain inside the RV as the slide is not sealed when partially in/out.
What happes when the slide fails?
Depends on the slide. On mine I have two different types. So far the Accu-Slide has basically not had a serious failure (one time I had to hook my drill/screwdriver to it to get it started in) the main slide (power gear)
Well I buy 1/4" Grade 8 bolts by the dozen along with washers and nuts.
But if I have a total failure I'm big enough to disengage the gears and push the blasted thing in/out.. Don't like doing it. but I can. 2 people it's easier.
Be sure to move it only an inch or two at a time till you have it in like 6 inches then go for it.. Out is easier.
Hydraulic.. i've hand pumped one in .
Tons of fun.
After 14.5 years I need to replace the floor in my main slide as it dropped down and locked the slide in the out position (I figured it out. lifted it with a jack and plank and got it in) new floor is just outside my door awaiting techinican. $$$$$$$$$$$$$$
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times