Humm experience can count for a lot, but I was just a bit worried that flooding a horse can make him more fearful to learn other new things introduced into his life.
I have a similar issue with my boy, hes great and calm but he hates prams or push chairs! This is a long stemmed issue and...
hmm that is odd, i no merlin my IDx can be as cool as a cucumber in the heavest traffic but when we go through a part of some woods on a bridle path he becomes really tense, i've always put this down to deer creeping about in the undergrowth, but it might not be...?!