I just picked up a Helios and with the angled wheel extension--WOW!! This thing is dialed!! Came from a 3pks which I always liked.

M11 does have a kind of small wheel. Upgrade sells a plastic dish wheel with vinyl stickers for it. I believe the upgrade wheel is a tad bigger. That may be your main problem.

Also the balance of the M11 is much different than the Helios, it may just take a little time before you get comfortable with it.