It's nothing to do with that @Pedro, earlier in the ride I was struggling quite a bit in some of the lanes, this has been a theme when riding this bike for a while now. Even though I've lowered it the bike is too tall so if it starts to go I struggle to keep it upright.
You've probably gathered that I love these bikes but (Pete mode on) I'm not getting any younger so if I want to continue trail riding if must be on a lower , lighter bike .