Hi all, loving the zwift, particularly the workouts. having had my FTP increase from around 300 to 330 over a period of about a month but in the last week I have noticed that, in the last week the power I am generating seems to have dropped quite dramatically. I have adjusted the trainer difficulty but my understanding is that should not affect wattage. The only other thing I have changed is pumping my tyres up. Could this have such an affect? I calibrated it before and after and both were in the acceptable zone.