
Originally Posted by
sniper297
Start with isolating the problem - run the default GP38 on Marias Pass, does it do it there? If not, run explore route with the default GP38 on the PRR route. Does that trigger it? Yes, try moving to a different starting point on the route, see if it does it in just one area. No, then it's not the route - try explore route on the default Marias Pass using whatever engine does it on the PRR, if it also does it on Marias then that engine has a problem.
Process of elimination, eliminate all the possible causes that are not the problem, whatever's left is the problem. You didn't mention which engine and where on the PRR route you are, or is it all engines on any route?