If anyone is interested. I changed a few ini lines of kentucky_07.
I had to raise the ai_line to 1.05 and with ai_squeeze_pcnt to 0.45 it was a pretty exciting race. merge_to_pit_line_dlong to 1550.0 that the ai comes down pit road like in real life. And merge_to_pit_line_length to 550.0

Alex