For another data point - we'll often order in a half-dozen of some shinai or other, and there is enough variation within those half-dozen that people...
Sorry for not replying... Tort I have similar problems with leaning and it stems I think from being lazy. Lots of us who are on the motodachi side of...
I don't know about "unlearn" so much. Once you get the feel for feet and hands together, it becomes easier to adjust your timing for different swing...