I have purchased my first telescope, a Meade Polaris 130, after lurking on this site for a number of years. I had a few sessions practicing setting it up and finding objects in the night sky with it, while I waited for a collimation eyepiece I ordered to show up. When it finally arrived, I started working on checking the collimation and was horrified as I realized how much the stock focuser rocked back and forth as it ran through its full travel.
Are there tips I can employ to tune up the stock focuser to help steady the tube as it travels? Are there any upgrade focusers that could be recommended for a 5" newtonian? The only focusers I have been able to find are for 6" tubes and greater.