Only other thing i see is the spot of glue under the catch cup!
Good eye! One thing I also do now is I am more liberal with epoxy under the catch cups, I also now strategically put epoxy on exposed wires, connectors, battery tabs and such to make it STURDY. I dropped my own RSM the other day and with my cat-like reflexes I went to grab it and just spun it up in the air higher and it landed on the atty. The atomizer broke off at the connector so I used needle nose pliers to take out the portion still screwed in, installed another atty and away she went. I like that! Pretty and tough, just like my mistress, yo ho!