Any chance of seeing a picture ?, given the 1 only runner, is the stability and preciseness affected. Would a double runner be more precise ? I want to be able to cut some pretty large panels such as 24'' x 48'' or so, is this common practice, is this not what sleds are meant for ? for smaller stuff I have a sacrificial fence on my miter gauge that works well and I bought an aftermarket miter gauge that so far I have only looked at the contents of the box.
Don't fear your tools, pay attention and respect the tools and avoid injury.