My method is to pull off what I think will fit from a piece, I use Graham (Sally's). All of my coils are 3mm so it's gotten very easy to judge what I need. I then roll it between my hands to get everything nicely aligned and even. Then I "massage" it, running two fingers, thumb and forefinger, along the length. This tends to remove those thick spots. If necessary, I'll rol lit between my palms again. Then twist one end up into a needle and wick away. I "stabilize" the input side of the coil with a thumbnail, if needed, or even twist or stretch it as I pull it through. Basic trim, wet with liquid, trim to suit, fill up and vape away.