I thought I had a broken axle lying around somewhere but I couldn't find it, so not checked fork drops (im)precisely at all. However (using eye of Sauron) I realised the outer part of the rim is about 3mm further from one fork blade than the other. Then I flipped the wheel, it was still off in the same direction... I also stuck a finger into the gap each side, tight one side, loose the other. So I'm thinking this could be it... although I had an old pug once where the front wheel was visibly not vertical and it just pulled a bit to one side... :S
I thought I had a broken axle lying around somewhere but I couldn't find it, so not checked fork drops (im)precisely at all. However (using eye of Sauron) I realised the outer part of the rim is about 3mm further from one fork blade than the other. Then I flipped the wheel, it was still off in the same direction... I also stuck a finger into the gap each side, tight one side, loose the other. So I'm thinking this could be it... although I had an old pug once where the front wheel was visibly not vertical and it just pulled a bit to one side... :S