When creating a preset in Helix, change the input block from Multi to 'Variax' or 'Varix Mags'.  The 'Multi' input block simply takes what the variax is currently manually set for. If you have the modeling on, it takes, that, if the modeling is off, it takes that.  If you want a preset where you can change between the modeling and the magnetic pickups via snapshot, you need to have two input blocks.  One set for 'Varix Mags' and the other for 'Variax'.  Then use a volume block to control how muc