Yes, T.S, heavy tracks have always been a worry.

However, from day one I've not discriminated with the state of the track for this Lay method and unfortunately have not kept records. Because of this I have to "fly blind" and assume/hope that the D.S. and Unitab ratings are fairly accurate when combined, but there's always the added possibility that the best horse may not win the race or even come close to it because of the unpredictably of the track.