Thanks folks - I worry that I'm fat fingered at best and too many years of serious contact sports render me unable to accurately gauge the difference between a well intentioned 'tap' and a serious death blow to whatever I touch. I'm one of those folks you only give heavy metal objects to when you want something demolished.
[Scene is dark at night in a seedy corner of town]:
Law: "Is that a flick knife you've got there?"
Moi: "No, officer, just my handy film removal tool for my M7."
I'll work on my "technique" a bit further I think. I've only had the camera for a couple of weeks with probably less than ten films through it so I'm still a newbie at the art of M7 abuse. The DX sensor likes a death grip on Ilford XP2 which is quite ironic because I override the DX sensor and dial it in at ISO 320 anyways.