This may be a stupid question but I am going to ask anyway. I was making my rub the other day and the brown sugar was a little old and was very clumpy. I put the amount I needed in my coffee grinder so I just get it nice and ground up and added it to the rub. When I was eating the ribs later on, it seemed like they weren't as sweet and had lost flavor from the grinding. Is it possible to grind it too fine, thus losing some of the sweet punch? Does it still need to be thick or can it have the same consistency as the spices? I am asking because I am making another batch this weekend. Thanks!