I tried a few cables. EB x 2 and one other cable. Then of course the tech's cable at the store.Possible long shot but......If it's a Switchcraft jack then I'd be suspicious if your cable is a economy budget import 1/4" as sometimes the tolerances are not always consistent. I've run into that and solved the issue with a 1/4" cable with a high quality plug. The cheap import plugs sometimes are slightly smaller, enough to "wiggle" in the jack enough to cause issues.
If I route the cable through the strap it takes and slight tension off. It's mostly ok. I am just annoyed I am dealing with this on a "new" bass
thanks for the help