I used it very rarely, but I remember that Encore 5.x has a sort of VST host that allows to open virtual instruments of third parties and assign them to the staffs. Did you ever try it ?
Encore (V5) has no sounds, properly. It uses the MIDI sounds generated by your output synthesiser or your computer’s audio system, including “virtual synthesizers”. There are on the web some improved virtual synthesizers which you might try to install. Probably you’ll need to activate it on Encore’s setup.
That may be easier/safer as a VST.
“I used it very rarely, but I remember that Encore 5.x has a sort of VST host that allows to open virtual instruments of third parties and assign them to the staffs. Did you ever try it ?”
This broke somewhere in v.5.
Encore 6 is not expected to support 3rd party VIs at first according to an earlier post by Don.