Playing from the 'Gut'

[Adrian Levi]

I am not a gut player and have had no real experience with them, but have a question regarding gut strings .A friend of mine replaced his steel strings with gut strings and said that he immediately noticed a drastic drop in volume on his D and G strings.
Would this have to do with the diminished downward string pressure on the top from the guts thus perhaps affecting sound post position, and is it the norm to have to reposition a soundpost to regain string volume evenness ...... or perhaps even rethinking tailpiece mass etc ?