I came out to take a look at some things you had done to your shed. I know you did not want a full troubleshoot, but I was able to spot that the power flickers were caused because the bolt was not tightened on the neutral in your subpanel. I tightened that down and let you know some of the issues I saw. Please let me know when you would like to have some work done! Thank you for using TE certified electrical! Veaya