I have a .177 Marauder with a regulator, light weight hammer. I changed the valve spring to a lighter spring. The hammer spring is oem. The shot count is in low 50s and the es is a bit high. The gun doesn't sound right, if that makes sense. I had a .177 Marauder, tuned by motorhead, so l know what a well tuned Marauder should be. I am using an Altarous regulator and suspect an issue but want to check everything else first. Anyone know what length and wire size valve spring would be best for this tune? It is good to know, if l can't get it tuned, a quick trip west to Scott will solve my issue. Thanks,Don