Omega D 5500 elevation knobs slipping?

Hey guys,

Hope some one here owns a Omega D5500 enlarger. The elevation knobs are slipping. I took a quick look and took off the knobs and there is rod that goes all the way to other side, with a cotter pin that catches the plastic knobs. There is something with the rod that probably has a gear mechanism that rises and lower the head. Has anyone here made adjustment with theirs? If so.. How do I expose the problem to fix it. I'm handy with fixing things, I need someone advice.

Todd

This might be useful.

(there was a url link here which no longer exists)

The rubber wheels fall apart. You can buy refurbished wheels or repair them yourself as shown here (scroll down on thread to see all the pictures):
http://www.largeformatphotography.info/forum/showthread.php?35033-Omega-D5500-repair-parts

Thanks for the link. It doesn't look like a big deal.

Todd