Whilst the Triton manual suggest clamping stop blocks and extension pieces to the fence I found this awkward and changing the holddowns fiddly and time consuming.
I have therefore build taller fences which clamp onto the existing metal Triton fence thus retaining all its features but allowing stopblocks, holddowns and extension fences to be easily attached.
The first photo shows the new fences with holddowns as well as a table insert with featherboards.
Peter