Hello, I have the Bartolini MK-1's that came with the lakland 55-01, I know that they are made offshore, split coil soapbars. What I'm wondering is if they are considered humbucking pickups. I'm putting a N-tuner on my guitar and I need to find out if it would need a 250k for single coil pickups, or a 500k for humbucking pickups. Any info is greatly appreciated. Thank You!