sentences:  While the production of the 311MS and 311S lasted only a couple of years at the beginning of the nineties, the 1511MS has remained in production.This illustrates how some Pacificas were lower or higher priced versions of conceptually similar guitars.The 904 model featured a Warmoth produced neck with a compound radius, locking Sperzel machineheads, and a push push tone control (like the 604W and 604V) that split the front dual single coil pickup into a single one.