Hi Dennis,I have tested some more locos, including 4 in the SCP route. The results aren't so dramatic as with the GWR/Small Injector/ Brakes locos, but are an improvement on X2647!I can see the problem the team are having - there are so many different permutations of eng file parameters being used to overcome some of the deficiencies of MSTS. One of the locos - 46239 - seems to run a lot better under your modded X2649 than it does under MSTS, but there you go!! I ran part of the V2 Mail on the SCP route and found that the time to fully release the brakes was much better with your version than it with X2647, although still longer than MSTS, but it's only 10 seconds. Braking from speed was very much better under yours than X2647. You definitely seem to have solved the original problem I reported and in the process, have also improved the performance of other steam locos. There are several other issues with OR, but one over which you may have some influence is to stop the "chuffing" when the regulator is closed. From some videos I've seen, US locos seem to do this, but they don't in the UK!! Please let me know if I can be of any further help, but I thank you for allowing me to test this for you :) Regards,Ged > Date: Sun, 16 Nov 2014 09:29:37 +0000 > From: