No matter what Jet I fly in FS9 at FL330 I get two contrails.The first one is the one that you expect to see, exiting the engines and remaining almost suspended in the wake of te aircraft. The second one is the problem.It branches away from the aircraft in a gradual curve downwards and finishes up vertical as though something is leaking? Any idea's solutions much appreciated please?All the best,Dave.'Three greens and soft landings'

this question has been asked hundreds of times, it comes up every couple of weeks; you have overwritten one of the default files with a different file that does not work, the solution is to put your default effects files back.