So I am a hand pumper who lives in Seattle Washington where humidity is 70%. I have a air dryer for the air coming into the pump. But as my Benjamin pump has failed I took it apart and I noticed all the water and rust inside of it. So that means that's what my air guns look like inside. So does anybody know of a small 4000 PSI capable inline air dryer? Or should I just make one. And what would you guys recommend for the dryer cotton or desiccant?