After messing around with a Ski Visions Base Flattener and Structuring tool after flattening and playing with different structures and multiple wax cycles, my Legends just were not as fast as my Havocs which I've left the base structure mostly alone of late. Even after reducing the structure a bit, there were some coarseness left that was clearly more so than that on my Havocs. Using the same wax, the Havocs just felt slicker.
So......I tried applying hard wax (Maplus RB Hard) and not roto-brushing enough to fully expose the structure. (This also worked well to fill/reduce minor scratches). I then applied RB Medium and have been enjoying very fast skis on dry, high teen to mid 20°F snow. It's impossible for me to know for certain whether this is solely a structure issue and not also a function of multiple base coats, but it certainly lends itself to more focus over time.
One of the issues we always have is up to a 30°F temperature swing in any given day. In the past week we have also gone from sub-zero to melting temperatures and dry fluffy powder to melting snows and everything in between. Frequently changing the base structure is of course impracticable and far from convenient.
Changing the exposure of a moderate structure is very easy, but is also dependent on the abrasiveness of the snow and hardness, along with quality, of the hard wax.
Anybody have other thoughts or experiences here?