my jazzcaster is a work in progress, walnut body, warmoth 24.75" scale conversion neck, stetsbar trem, oak grigsby 3 way switch ala strat, cts 500k pots and so far The creamery wide O neck pick up, still undecided about the bridge, something fat but clean. I have an earthing issue I think, hums until I touch the strings, what can I do?