Marty, is there something here on the forum about this strengthing 'fix'. I dont recall anything recent, other then a couple members who hd their brackets break.
I first read about the "fix" on a concours forum in Australia, and I thought that on this forum, there was a link to these articles, as well as a member here fabbed his own bracket up.
I thought I had saved the links, but now need to see where these are. Might need to look over on the other forum to see if I was mistaken and they were all over there. I am on my work computer now, so they might be on my home pc.
Pretty much did the same thing with silicone grease. Plus, a bit of oil on the rollers. I could not find the grease shown in the FSM for the center runner. So I used silicone on it too. Actually, what I used was Seal glide. Wide temp operation and it won't run off somewhere.78k on mine. I cleaned the tracks up and used some silicone grease on them. Never seize on the center.
I videoed and timed it before and after. It is definitely quieter and seems to be a second quicker.