I have a Galaxy DX 2547 that all of a sudden sounds terrible on USB and it used to be great. I opened it up and proceeded to check the alignment with my B&K 1805 freq Counter and I found that all is well EXCEPT the USB Transmit section. The counter will not stabilize and just wanders around randomly. AM and LSB are both good, Can somebody please help me figure this out? Is it a bad crystal or PLL maybe?