I also have Virpil but the CM3 base. Firstly check the virpil app and eliminate the deadzone that is set by default. It's small but noticeable in the Apache. Removing it helped a lot with small inputs needed for hovering.
I only fly the Apache right now, so I removed the cam profiles and completely loosened the spring, so the stick stays where I leave it. Complete game changer and I mainly "trim" now to help the SCAS stay "unsaturated".