Another thing I recall from reading about poly/cushion (I think regarding the poly at Woodbine and Turfway and adjustments to installed product) is that the thickness and composition of the coating wax can be changed (the top couple of inches of product replaced if necessary) to deal with weather extremes, and resulting in a tighter, faster track.

When Kee did their installation, the mfr rep dealing with news media made a point of mentioning that all "Polytrack brand" tracks in the US would not be the same (composition different). Allows handicappers to maintain knowledge of particular track biases.

Wonder if the main track at Kee is different from the training track composition, and how Turfway and Woodbine differ from that. Propietary info, I'm sure.