I don't know the answers to any of your questions, but I imagine we all know what a healthy/happy plant looks like. Do they look healthy/happy?
Shock is a serious issue and the effects can be different on different plants and systems.
I would guess that if you have shocked them a couple times already (1" only), then you should back off and let them heal. Be sure everything is in check, and give them some TLC.
When I first began (I'm still a noob) I was stressing and worried about my precious few plants. Now I laugh. Although I have less than 12 plants, I realized how insignificant the ones I stressed over were.