Langejans Guitars are constructed using selected materials to meet the highest standard of workmanship. All Langejans instruments carry a limited warranty against defects in workmanship to the original purchaser. Langejans Guitars will repair or replace at its option, any Langejans instrument or part thereof which is found by Del to be defective. This warranty shall not apply to damage of woods or finish due to the natural properties of wood, temperature changes, carelessness or accident, nor does it apply to service parts such as strings, tuning machines, and normal wear of frets. Service Note: Langejans Guitars have a two-way adjustable truss rod. Turn Allen nut clockwise to correct neck warp. Turn nut counter-clockwise to correct reverse warp. Takes 1/8" Allen wrench.