Hello, sorry for the late answer, but I am up in the mountains with bad internett conn.
But yes, I did use the link pipe that comes with the project pipe. And converted the bolt on that fit the 1199, to clammer, that fit the 1299 by simply cutting of the bolt flanges.
I have sold the 1299, so I cant get any pictures of the operation. But as I said before, it is not big operation to convert, if sc-project are to slow coming on the market with a pipe that fit the 1299 from factory.