The gun is 32 years old and the spring was broken into 3 pieces when it was handed to me by my friend who asked me to fix it for him. I took the gun apart, lubed the seal, which was in pristine condition and put the piston back in. I ordered the Vortek Pro Guide 2 and got it in the mail today. It went it with no muss and no fuss. I put the rifle back together and test fired it. HOLY MOLY, the Pro Guide 2 kit is so smooth and noise free, all I felt was the thump of the piston. The rifle also didn't jump like a normal springer would. I give 5 stars to the Vortek Pro Guide 2 kit. If your gun can't be upgraded with a gas ram, the Pro Guide 2 kit is the next best thing, in my honest opinion!!