Phil if you have any issues with the lap counter, since it sits level with the track rather than the designed just below the track, there is a mod you can make.
I did this on my 2 lane test track, Set the counter where you want it, mark the bases with a pencil outline, and then use a zip router or dremel router, and extract the ,
marked areas allowing the counter to sit at its normal level.
When not using the counter, hay bales and bushes fit the holes nicely.