Feeling the fork top out (kyb sss)
 

Have done the front end swap and got new springs and valving changed by local suspension tuner. I have never ridden on these forks before they went to the tuner but when the fork tops out I can feel it. Its not a clunk but feel the fork reach the end of its travel. Any thoughts?

Can'tsay I`ve ever noticed that on mine

I do on mine in certain citations, not sure why.

Triple clamp stem bearings may be loose.

Are the springs under preload?

Do you mean has the spring still got preload on it when fully extended?
If so id say yes

They don't feel loose when I hold the bottom of the forks and move back/forward to feel for movement, but I had planned to take forks out and recheck everything anyway.

Mine make a clunking noise when I return to ground after full extension (wheelie) I have read it has something to do with not being bled properly. I did just realize that my wheel spacers were not made properly and did not allow the right fork to float on the axle so I have been riding a while with missalligned forks

It turned out to be the rebound valving is too soft. wound clickers to 2 clicks out and its pretty well gone. Have spoke to the tuner that just revalved it and they are going to sort it out.

I had exactly the same thing, I hadnt correctly bled the carts. Re-did them, all fixed.