I start my igf next week and have been reading enough about measuring on a slin pin to make my head spin. I keep getting contradicting answers. SO!, since i have the mc igf (1000mcg), 30gauge/.5"/1mL pins.....and the marks go 10-20-30...100 with 4 little ticks between each of them. Does one little tick equal 20mcg?? I know this has been said again and again, but I dont want to F this up, thanks guys.