While not in the rulebook, warm-up sessions are a concern. There is a huge disparity in the speed of the novices. Experts, who should be experienced in riding/racing with riders of different speeds and abilities, have 3 warm-up sessions. Novices, who range in times and experience of Matt Neuberger, who runs at expert-fast speeds, to first-year racers or those who just don't run at that pace, are in the same warm-up session. If you can only accommodate 4 sessions, then please consider 2 novice and 2 expert sessions or eliminating the plate designation, altogether, and go strictly by lap times. This is for the safety of the riders, not convenience.