Paslode 219235 F350S Tool Tune-Up Kit from Professor Foam Tool repair kit for the F350 and F350-P (EW # 1186418) Can fix air leaks, trigger valve air leaks, and feeder claw nail feed problems Part # 500407 MAIN VALVE SPRING, Part # 501001 CAP GASKET Part # 402011 SLEEVE SEAL and all the O-Rings in the Tool! Made in the USA with OEM Parts from Professor Foam