Try to identify the manufacturer of the slide mechanism.
Once you know the slide manufacturer, then use google to see if you can locate a manual covering the slide installation and adjustment.
With this information, you have a good chance of adjusting without causing a problem.
Assuming that your slide manfacturer is Power Gear, simply googling "power gear bedroom slide manual" will provide some helpful info.
If you need additional help, try posting your request on the Monaco Owners' forum on IRV2. You may get a response from someone that owns the same coach.
Good luck.
Fred
Fred & Vicki
St. Augustine, Florida