yea but do they work ok or fine or crap or not, reason i ask is its hard to source plugs in my remote location and easier to get os plugs can you use a os button maybee ?
Do not attempt to use the OS button. You can use the OS P3 / P4, I believe the P4 is preferred, in the Nova. Just as beidle99 says, once you use the OS plug, you should not switch back to Nova plugs in the same head button due to the taper difference.
A person I met here on Tech mentioned they have two head buttons for their 21-4C Team...one for OS plug and another for Novarossi plug. A bit extreme IMO but it works for him.