Swiss, my $.02.
That plug pic is great! - and by that I mean - your photography is really solid.
The plug itself is another story.
That color you show - in daylight - is the color I get when I am 1 size jet off the rich/safe size I need. Really close.
In short - you gotta move from that color to something that resembles brown - but it happens at this point often with a single jet size.
You can run like you have it - no problem - other than a bit of fuel consumption and smoke - but the next step should give you that BaWAAAAA! sound that will bring great pleasure.
Keep in mind - I have no formal training - am willing to take unreasonable risks - and offered advice on my second posting when I didn't even know what a two stroke was. (Ginch has reminded me). Just sayin.