Thankyou Kenny, Tom and Captainkman,it all seems to be sorted. I did as you suggested Tom and did the data base. Then as Captainkman suggested I put all my consist on surveyor, saved then went over to sessions and loaded it from there. In the past I always did a quick drive and got away with it. The next idea was going to be a search for a defect like you suggested Kenny. Thanks once again.