Glad you're happy with it, it's a neat tool for sure. Do not add .2 grams, you will surely flood it out. The .2 gram number is from clean and dry, so unless you noted that weight (empty) I suggest you keep with the 'add .050 grams, never more than .1 at a time' rule.
Nothing fatal with too much, but it does slow the action down, increases the 'cooking' of the goods and can lead to waste. Best avoided. "Load small and often".
What you're calling SS is really Nickle plated (brass in the case of the unit, aluminum for the MP), not that it matters a lot from the user end. However, you've probably noticed that not much concentrate really collects on the lip you're talking about. Scraping it off simply delays the next condensate from getting heavy enough to feed itself back onto the ceramic, overall you gain nothing and actually give a chance for some of the oil to 'cook' longer, possibly effecting the taste? It's OK and all, just be very careful not to chip or otherwise damage the ceramic, it's quite thin and brittle.
Best wishes.
OF