Sorry for the digression, sometimes the fingers have a mind of their own. It is a pretty simple fix to route out the depth adjustment hole on the cap iron. I used a Drimel with a diamond bit taking just a small amount off before test fits. On most of the cap irons the fit was good after two or three tries.
I've worked the planes with the new irons and modified chip breakers and the feel is the same as a unmodified plane with LN iron. No more backlash than before, if you have LN planes and want to use other irons it is worth the trouble.
Here is a staged photo of my set up: