I have a mare that I have had since she was a filly. She has always been very unbalanced and tripped a lot even as a foal. She was anemic when I got her, but she has been treated for that. She is 6 now and she has been broke and ridden for quite a while. She has an interesting lateral walk that...

He has come a very long way and I am so proud. Anyway, I see that he kind of "bobbles" in and out when on the bit. Will stillness of the head come as his neck muscles become stronger? Or is there something I'm doing wrong? Any help/suggestions are welcomed! Thank you.