Funny you should mention Shop Nation George. I upgraded my saw specifically because of their product. They don't make one for the 705. I ordered one and either I ordered the wrong one or they sent the wrong one. I'm not sure. I ended up modifying the one they sent until it fit.
That in combination with my ZCI had helped a ton.
The only thing is my hacked up version will not allow me to tilt the blade. I need to get in touch with them and get the correct version and try again.
And - yes, the ZCI gives a much better cut. I need to make a zero clearance fence as well. Always another project!