Quasi-newbie question: I'm coming back to casting after a loooong hiatus, long enough so that it took me a couple of days to find my Star and a lot of this is new again. So, I'm about to make some Glen's Black (is that what we're calling it?) and want to pour the melted lube directly into my Star. So, HOW MUCH DO I POUR IN? And how do you guys measure? Since the sticks I used to buy were 4", just measure 4" from the bottom of the reservoir, Sharpie a line on the outside and eyeball it to around there? Or is more okay, and how much more? I don't want to screw up and have to remove any ...