I'm curious, how much pressure do you have between the base of the foot and your fabric? My Horizon has an adjustable knob on the darning foot. If I have it too "tight", I get puckering problems. If I back it off so it just skims the top, then my feathers don't bunch up. If I have to stop to adjust my hands, I try to stop on the "straight" side of the feather, not on the curved top. I just find it easier to start straight. Good luck, and keep practising
