Need Help With Buzzing Issue

[Jayson P.]

I have an Epiphone Dot Studio that has some annoying buzzing.
When connected to the amp, the buzz is pretty overwhelming when it's just sitting in my arms.
It buzzes on lower volume and with my amp settings low. I believe it is a grounding issue but I am not 100% sure. I noticed that when I touch the ring around the neck pickup, the buzzing stops and I get my nice clean sound. I had some upgrades done to it (pickups, wiring, pots, jack) and It still has the buzz. Any suggestions? Would copper taping help?

Here is a little more info in case it may help

Guitar
Epiphone Dot Studio
Alpha 500k pots
Seymour Duncan Jazz/Custom 5 pickups
Shielded Wiring
BCS Roller Bridge
Bigsby B700

Amp
Fender Mustang I
Planet Waves Guitar Cable

Thank you for reading this and any help that is given.