I appreciate all the input. Just to clarify; I'm not trying to bring up the old "Poly Vs. Nitro" debate. I am wondering more specifically if a thicker finish (many coats) would reduce high frequencies.
Every electric guitar I own has a Poly finish, and they all have the same bridge pickup, but my Warmoth seems to have less high frequencies when plugged in. I'm wondering if it's due to the thickness of the paint, or perhaps something with the electronics. it's wired pretty simple. i 500K volume knob and no tone pots. A 3-way switch, 2 pickups, and an output jack. The pickup is direct-mounted, while all my other electrics have pickup rings (or pickguard in the case of my Strat). They're all alder bodies with maple necks and rosewood fretboards. So why the perceived lack of high-end when compared to the others? It even has an OFR bridge, which is "supposed" to be bright sounding.