My CV 50s Squire Strat has suddenly developed a volume issue. A few days ago I started noticing that the volume would cut out occasionally. If I wiggled the cable it would come back. Suspecting a bad solder joint or broken wire in the input jack I changed the input jack using an All Parts jack supposedly made by Switchcraft. At first, when it was put back together there was no volume at all. Took out the screws and tried it with the jack pulled away from the cavity and it worked. The cavity has shielding paint and evidently the new jack was allowing the cable tip to touch the edge of the cavity accounting for no sound. Fixed that issue but while I now get some sound, it's very weak at full volume and non existent at anything lower than 8 on the volume pot. The strange thing is that it was working before the change out. I played a full gig with it a week ago with no problems. I thought, maybe a bad cable but plugged the same cable into two other guitars and they behave as they should with plenty of volume at the same amp volume setting. Also tried a different cable in the Strat with same low volume result. Could the volume pot have coincidently gone bad all of a sudden? Before this started, I DID notice that the volume would go from too low to a sudden jump to too loud from maybe 7 up to 10, but at least it did get loud and could be controlled. It no longer gets loud enough to be usable. Any ideas how to further troubleshoot this or any clues as to what may be happening and how to fix it?