i assume that the 29 is to big unless u wear a 12 US shoe.
that being said, go to a boot fitter cause we cant tell how the boot you have fits you, and use that information to base what size/model of boot you should purchase.
for exampe...its quite possible that you shouldnt even BE in a spk, ala, you have a narrow foot(this is obvisouly a guess)
go to a fitter! it will benefit you trust me.