Bump.
It's mainly the sectors to pit begin, sectors to pit end and pre pit speed limit values in magic data that help here.
You should make sure the sector values don't prompt erratic veers from the CC cars that might trigger a crash, i. e. try to make them long enough so that they join the CC-line seamlessly - or at least allow the CC cars to make a nice smooth way from the CC-line to the first pitlane sector and from the last pitlane sector back to the CC-line.
The pre pit speed limit defines the amount of deceleration the CC cars make before the first pitlane sector. This is quite crucial; if you give a value that is too low, they'll slow down excessively, maybe even cause a crash. I don't really know how to make them avoid some deceleration completely, but I took the highest value the original tracks have to offer (20480 for Montreal) and work with that, if needed.
Good luck!
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