Wulitzer 2 - Sound Problem

We just bought a Wurlitzer 2, and the sound of the music is very muffled.  We don't understand it. When we were at the seller's home, it sounded great, then we moved it home, and the sound is very muffled. We called a Wurlitzer repair guy, and he said it would cost $300 for him to come out. I think it's ridiculous.  If anyone can help us with this issue, please help.  We welcome any input.  Thanks.