After some dutiful service, my Pittsburgh Pro Flex-Head Ratchet isn’t as tight as it used to be. It still works but you have to hold the head while lining it up on a fastener or else it will flop all over the place. I took it apart to investigate and got an idea for a really quick and easy fix for floppy ratchets. This should work for any flex-head ratchet without detents.
Fir Works 
The G7 problems you are having are card related. The Lexar card you are using does not play nicely with the G7. I know this from my own experience and the experience of others.
The most consistent problem is that when recording 4K videowith the Lexar, the recording just continues and can’t be stopped unless the battery is ejected. Happened with me constantly with the Lexar card you are using. I think it has to do with the 3 pin configuration which the G7 cannot use. Anyway, as soon as I switched cards (I am using Transcend SDXC 1 (10) 3) I have never ha the problem again and that was almost a year ago.
I have given this advice to others and they stopped using the Lexar card and their problems stopped as well.
Good luck
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