dough acting strange in mixer

Toast

I have been making bread for about a year and a half now and they have gradually got better. I treated myself to a KitchenAid mixer at Christmas and i am vert happy with it.

My last two makes though the dough has climbed above the hook and got into the spring on top. Bit fiddly cleaning out is all.

Two questions, why is the dough suddenly start to climb over the hook when i an making the same mixture.

The second is no a baking question as such but can the pin  that locates the hook, can it be removered for cleaning purposes

Yes, my dough sometimes climbs the hook on the KA mixer as well. Depends a lot on the type of dough and the volume. When that starts to happen (before it gets to the spring or over the edge of the hook base) I stop the mixer and scrape all the dough completely off the hook, sort of 'pile' the dough neatly in the bottom of the bowl, re-insert the hook and start again. Sometimes that's all it takes to get it kneading properly again. Sometimes it just climbs the hook again, at which point I usually give up and turn it out on the counter to knead by hand (or stretch and fold).