So that bass belonged to a prominent BCR community member and serial number database owner named Lorne. Lorne had several nice BCRs including a Phil Lynott played Mockingbird. The woman you bought it from was a romantic interest of Lornes, rumor is she OD'd him on drugs and he passed around Jan of 2020. The community had no idea what happened to his instruments. That Ironbird is a 1985 USA and was one of his favs, it is easily worth 10x+ what she sold it to you for. I know he had issues with the truss rod but I believe it was fixed shortly before his death. If you're on Facebook Official BC Rich Unlimited will be the place you want to be
Congrats