Picked up a PRO 26 off eBay cheap and the speaker is very low, almost unusable. When I plug in a headphone, it plays at full volume. This leads me towards a bad speaker, but I wanted to consult the experts here on how hard it would be to find a replacement speaker. Should I just go through eBay and get my money back ($30), I really liked this scanner, and was thrilled when I found it again for cheap.