Denon DVD-2910 excessive vibration?

My Denon 2200 has an extremely bad vibration with most SACD and DVD-A discs. There is no vibration with DVD or CD. The vibration gets less and less as the tracks go up, just like yours. It also runs very warm, almost hot to the touch.

After searching posts, it sounds like this a common problem with a few Denon models. The unit sounds good; although, I have mostly listened to DVD-A and SACDs now that I have the capability and have purchased at least a dozen high res titles.

A couple of years ago, two of my friends have bought new DVD-2900s after consulting with me and now one player doesn't read but every other disc. The other player quit reading discs all together. I almost feel guilty.

In the past, I have been a very loyal Denon consumer, but now I am starting to have my doubts.

I will call Denon again and tell them that re-intializing did not resolve the problem. This unit may be on its way back to the dealer. I am not sure there are any other manufacturers who offer reliable units at a similiar price point with the same build quality, performance and features.

Here is a very good article which discusses CD balance issues http://www.mscience.com/faq17.html. Redbook CDs have a particular problem with high speed drives due to the lower tolerance standards for the center hole.
The Denon 2910 spins at a high speed and has a large buffer. I do believe that is why it is less tolerant of unbalanced disks.

Please use this URL http://www.mscience.com/faq17.html
There is an extra period at the end of the one I posted.

It sounds like bloomphoto may have diagnosed why the vibration is happening, but can that be "fixed", or is it just a quirk to have to live with?