Greetings to the Burgies--first time this year! You get to them very carefully; IMO more injuries to 'streamers occur from falling off of ladders -- worse yet substitutes for ladders -- than any other
cause (or sliding off the top after climbing the ladder).

Be sure to pad the ladder well at the point it will be touching your 'stream. And pay attention to usual cautions about using ladders. Do NOT put the ladder against  the curved upper panels (the "quarter
rounds"); they have been pressed and are  quite susceptible to being dented. Sides or center front or rear OK. And yes you  can get on top -- when you must! But it  is slick and curved. Try to stay on the framing indicated by the row of rivets. but if you cannot, try to distribute your weight by sitting down, lying on your side, or using your thigh to spread your weight.  One service man I watched, had a heavy large throw rug with the rubberized backing, and he stayed on it. But don't be antsy: I have also seen AS service men stand and walk on the top, but they stayed on the center portion and tried to put their weight on the rivet lines.

I use a 12 ft., 4 section, folding ladder with the top section at a 90 degree angle. That piece I place over the top of the A/S The tips have rubber caps which I try to  place on the rivet line, and am careful not to mess up the antenna, vents, and AC shroud. With that arrangement, I can go almost to the top of the lower 3 sections and lean over or even crawl over the top section to get to the problem area.

Unless you have a quicky emergency job, go prepared to take care of whatever it is you may know of, or find, to do: rags, appropriate caulking, a can of WD40 which in my opinion makes a good
solvent to clean up surplus caulk, usually where it is not supposed to be. And I like to clean the gaskets (seals) with a product like ArmorAll (303 is better, if available) to protect them from oxidation, UV rays, and to lubricate them, as well as the pivoting points on the vents -- whatever
you find that needs protecting, or lubricating. And I prefer to use a more substantial lubricant than WD40 which will wash off and has other drawbacks. My preference is LubeOne or a spray on
white grease (but it holds dirt).

Refer to your instruction for the TV antenna and lube it, as instructed ! This is one place IMO that WD 40 should not be used.

Do the window caulking as you work your way down. Note a posting, about umpteen spaces back, about removing old caulking. Good time to do it! And treat the riding (clearance) lights just as you
do the windows. I once had a rear lower side panel light that had been so full of water on occasion that it ran back through the opening around the wires.

The top of any and all trim strips should also be caulked.

If you find loose rivets, (they will be blackened around the rivet) clean them well and then touch lightly with the caulk This is where a clear sealant can be  applied. Caulk or Sealant, you don"t
want much, just barely enough to seal the edge of the rivet. And take seriously instructions on the product about starting with a clean surface.

Well, if you have read all of this, you won't have time left to do the job, so lean back and enjoy!

Donald