Try this plunge into the end of the stock just far enough in to allow the full exposed blade to "plungein". The gently back up a 1/4", then complete your cut.
Also, how long are your pieces? Can you rig up a set of scrap pieces so there is a trench, with an outer "wall" to the right of the track and a "sacrificial fence" block at the end?
Say some scrap or extra stock brad nailed to a sheet of plywood with a piece wide enough to support the track, another to the right of that piece to just admit the work piece and the sacrificial stop block at the far end?
Also, how long are your pieces? Can you rig up a set of scrap pieces so there is a trench, with an outer "wall" to the right of the track and a "sacrificial fence" block at the end?
Say some scrap or extra stock brad nailed to a sheet of plywood with a piece wide enough to support the track, another to the right of that piece to just admit the work piece and the sacrificial stop block at the far end?