Gate 4 has been a problem at Peterborough for a while as it generally collects water, gate 1 is normally fine certainly I don't remember having a problem with it this year.
As for doctored tracks, unfortunately you will have to look a bit closer to home, our track is a lot easier to ride recently which is borne out by the fact that most visiting riders invariably do well and our home defeats over the last few years evidences.