Nazareth, I got my body back on Friday afternoon. you'll find my story thereafter on another post regarding Focusing Screens however basically the sensor is a lot cleaner. I cant determine if it was 100% clean before I had my issues with the focusing screen however there are now only around 5-6 distinct dirt spots, they don't look like left overs from the previous issue.
I've been looking at buying a cleaning kit or two but one of the better dust pens given that it is distinctive spots might be a better bet along with a good quality loupe.
Did you clean yours yourself in the end or send it away?
1Dx, 7D, 24-105, 70-200 IS II, 16-35 II, 100mm Macro IS, 85mm F1.2L II, 24mm F2.8 IS, 18-200, Tamron 17-50 F2.8 VC, Sigma 1.4x, Canon 2x iii, 430EXII, 600EX- RT, ST-E3