No, you misunderstood what I said. I do NOT have problems with the heel mag release, yet do have problems with the newer style 22/45 mag release which was then installed in the MK III, and MK III era 22/45. So, I prefer the MK II heel style mag release much better than my 22/45's or MK III's.
The other MK III changes like the LCI, and mag disconnect are the worst modifications. However, many tout the mag release position an improvement onn the steel framed MK III. I don't. See?