Set Default from MuseSounds to MS Basic

Many of the new sounds offered by the 4.0 update are completely unusable, especially in the brass department. There are some definite positives, but the lack of evenness of sound in specifically the trumpets and trombones, especially in jazz contexts, is beyond frustrating. I'm now getting tired of having to change each track in a brass band, jazz band, concert band, etc. setting back to MS Basic just to be able to hear the brass, or get the actual nuance and markings on the page instead of the wild and inappropriate "musical liberties" that the new SoundFont takes.

Is there any way to set MS Basic as the default sound pack until the new sounds are properly fixed and updated? I have dozens of scores that I've been dealing with since the new update; it's irritating to manually fix each individual track for each score to a SoundFont that actually does the job.