Linbro said:The saw base stays locked onto the rail for the whole length - it has a continuous groove that accepts the rib on the rail. Maybe the base is longer than the TS55? I only found this out when I first cut the splinter strip.
I should have said, you still want some run in/out, you just don't need anywhere near as much - eg. the 2100 rail is plenty long enough to rip a standard 2040mm door.
And yes, you can tighten /loosen the saw to the rail.
I will caveat this with I like to be plunged before entering a cut (unless a plunge cut is required).
One other note on the rails is the splinter strip which is huge improvement as it slides into a profile on the edge of the real. Mafell really put some thought into their rail design (groove for saw base, slide in splinter strips, easy multiple rail connections, etc). I attached an image that highlights their rails.[attachimg=1]
I have never had much luck replacing my Festool ones. I have tried a lot methods, but none seem to work. Thinking is was the tight roll it comes on I took the time to layout under the rail and allow it to go flat before applying it. It seems the adhesive is just not as good as what comes from the factory. On my next replacement I am going to take some fine sandpaper to scuff up the adhesion area.