*disclaimer- I am a fanboy
I have the older version of the kapex, that has two legged outfeeds, and attaches to the mft800. I have used it with 2x6 pt stock, and it is too heavy. 3m decking stock, ridiculous. Trim longer than 6 foot, a real hassle. I had a Dewalt stand that was the same. The only solution for me that works for jobs like this is the mft 800 and 1080 set up side by side, and a sys1 for the height difference. I hate to say it so many thousands of dollars later, but if I'm decking, I'm on my knees.