Race length

I am using someone elses GP4 exe that they kindly e-mailed me. The only problem is that the race full length distances are only about 10-12 laps. How do I change this back to the normal length (This is with race distance at 100%)

Any ideas ?????

have you the gp4tweaker installed?
if not, get this utility,install it and check around race lenght/race laps

Done and now works, thnx for your help


Huddo