Amazon and ebay currently have lots of cheap directional control valves available. They run half to a third the cost of Prince, Wolverine, Magister, etc but they look identical and are likely the same valves without the branding. Has anyone purchased any of these and been able to find the correct Power Beyond sleeve to go with them? Most of the ones I see advertised show a port where the PB sleeve could be installed but they do not offer a part number or any help in purchasing one to fit their valves. Odd because in their description they state that their valves are "power beyond capable".