I'll add my voice to Rawhide's and Spaw's, good advice all around. Don't sell it. I sold my old Gibson and lived to regret it. Modifying strings gauges (go up in gauge and down in pitch), nut and saddle materials (bone?), string pins (try ebony or brass), set up tolerances, tuning machines, may help. Keep it and buy a second via a payment plan, or borrow etc...Good luck! Mooh.