The flattening is very slight on the Werners, and I find It helps when I have to get my roll back again each year. Like now apparently based on Sunday’s results.
I have a similar thing with my H2O WW paddle which I like for the same reason, helps keep my hand set for a roll which in WW can come with no warning compared to most sea kayaking.
And it has been a while but my GP looms are also not perfectly round.
What bothers you about it?