I have had the same problem with an Ion Virtue board. I had to turn the pressure up to get the armature to seal, so i would try the armature back in the original board and see if it seals. if it does then you have two choices, turn the pressure up on the virtue board (dont go to high though, about 200psi) and try and tune the marker to run at this pressure or de-solder the solenoids and swap them over (this will void the warranty on your virtue board though, so you should only do it if you are confident at soldering). You should post on the tech troubles and see if anyone else can help.