I've had my DeWalt 744 BT for some time now, I very much like it, it has been a great saw for me.
One thing that was NOT very good on the saw, from the very beginning, was the guard/splitter.
Here is a stock shot of the saw, the guard was not easy to use, and you could very easily bend the metal holding it on to the saw, which would then bind on the wood as it came past the saw.
I soon ditched the plastic guard part, and cut the splitter down to just a splitter with the anti-kickback palls, this worked OK, but it would have to be removed for cuts that did not go all the way through the wood, and I found that the palls did sometimes make the wood twist as it went by, and improvement, but still not a great thing.
To be honest, I'd not really heard of a "Riving Knife" much before, but once I'd seen one, I thought, boy, that is a good idea
I removed the spring and palls......
and put the piece back on the saw, to mark it so I could cut it down..
With the blade lowered all the way, I just simply marked the piece of steel with a marker.....
Once I had the top marked, I did a bit of drawing to get a nice curve to cut....
Five minutes with the angle grinder and I have a riving knife!
Here it is in place, I think that looks fairly good.
As you can see, it tilts with the blade, and........
When the blade is lowered all the way, it too goes under the table,
no need to remove it now, except whenI put the dado stack on the saw!
I'd say that was well worth the 30 minutes or so that it took