For what its worth DJ, I was speaking with a friend the other night who has run a 6-way blade quite a bit on a New Holland tracked machine. He said that it will do an "okay" job, but was disappointing for the most part. He figures these tracked machines are just to short coupled to effectively push around these blades. I've read this from others on this forum also. They say if you want to run a 6-way, you are better off with an actual dozer.
I do hope you get the answer you are looking for from Blue Diamond.