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Yes, I upvoted that post but didn't resteem it yet... done! If you find straight answers to all scenarios, let us know in the channel maybe.

I've check with others users and @l0k1 reminded me only higher rep users can negatively affect the rep of a user. SP doesn't enter into that particular equation.

Rather the rep is a limit on how SP can be used.

Hope I got that right =)

Thats how I thought it worked, thanks for the research @the-ego-is-you