Bad aftermarket product required disassembly of Crosman 362; each step depicted

I bought a custom aftermarket valve or my 362 air rifle. It worked great initially; then the valve would lock up if pumped the advertised times. Less than advertised pumps still resulted in speed loss and massive “air dumps” (air left in the valve cylinder even after the gun was fired; a 2nd, sometimes 3rd shot would result without pumping). So a complete disassembly was required, which I videoed, and the original factory valve was reinstalled. Gun works fine now!