Oh boy, not sure where to start, but here goes. I noticed the screws that came with the mirrors are starting to rust, so I will go to HD to try and find stainless inch and a quarter long, 1/4" screws with a lock washer and nut, as well as 8x32 cap head screws (Westfield mod) for comparison, to tighten the socket. I will post a pic when I get them to be sure I have the right ones.OK this may take a while. Fixing the wobbly socket. First off use inch and a quarter long, 1/4" screws with a lock washer on only the nut end. This will make the mirrors very secure. As far as lowering the mirrors, (you need to be adventurous here) . Add (pack tight) with dry sand in the inside of the thin walled tube this will keep it from collapsing while bending. Insert a 6mm screw in threaded hole to keep sand from falling out. Need a good vise to hold the tube while heating to a cherry red. Once tube is red ,you can easily bend tube appx 30 degrees from the (perpendicular pivot tube) using a pipe wrench. You can also add a slight twist to the tube to add more drop. I achieved appx. 2.50" drop. More than enough to lower the mirrors. Took 3 hours to do. Also remove the 2 plastic caps at each end of the pivot tube, prior to heating. Works great.
BTW, I am not a mechanical engineer, just an insurance agent with a high school education, so go easy on me for this next part. I assume you are using some type of torch to heat the sand filled tube cherry red? I don't have a torch either. And lets just say that everything went well with the heating and bending, because with my lack of skills and experience I will absolutely mess that up in every way possible. I would then have to repaint the re-bent tubes because the torch will burn off the original finish. And then reassemble and install.
So to sum things up. for most of us this is not a "no cost" mod. I need to buy a torch, and spray paint, and another set of mirrors (because I will kink and bend the crap out of the original ones) to replace the ones I fubared. And still have to buy the Helibars extenders to achieve the same thing.
No thank you. I think I'll just take the short cut, and save me some money, trouble, time, and aggravation with the simple Helibar and larger screw with washer mod. Now that is something I can handle.
Thanks for everybody's input, this has been fun! Stay tuned for my results!