Having problems holding a cushion even though your valve is within tolerance? SFM will provide a free on-site inspection of your injection barrel. When an evaluation of an injection barrel shows wear in the stroke area and the remainder of the barrel is within tolerance, SFM will re-sleeve that barrel with the correct bi-metallic sleeve. We will return to you a barrel that will produce in par with a new barrel at a cost savings to you. (Minimum sleeve lengths are 5 x diameter).