Hi Martin,
I looked inside but could not find any way of adjusting the drop. In any event, adjusting the drop would not solve the riving knife to blade clearance problem.
The only answer seems to be deepening the slot in the riving knife. It took me about 15 min with a hack saw and a rat tailed file to do the job. Good Chinese steel - ex Ford bumper - not too difficult to cut/file!!
The riving knife now drops below the table and partially clears the riving knife/blade clearance problem. I say partially becuase as the riving knife is cut to a larger diametre than the standard 10 inch blade you cannot get the same clearance all around.
As this saw is made for a number of retailers there is the possibility that someone orders it with a slightly larger blade, say 270mm if there is such a thing. This might explain why the riving knife is cut to a larger diameter.
Anyway, the saw now provides a clear table for mark-up/assembly and the riving knife is closer to the blade - at least for part of its circumference.
Best regards,
Peter