I'm looking to get my 61' Gibson SG refinished. The guitar was already refinished in white before I bought it. I'm looking to have it repainted in and lightly aged gold. Is it necessary to have it stripped before its refinished, or should it be okay to be painted over with the new color? About $275 or so difference in stripping vs. not stripping so it is a substantial amount. Don't want to have my guitar ruined but also don't want to pay more than I have to. Thoughts?