Convert air kingpin release valve to hand pull

I have exacted my research I can't seem to find the answer I'm looking to convert my fifth wheel air kingpin release valve in cab to hand pull and use existing pluming to get air bags dump I understand I need level valve with dump and a switch in the truck but as far as fifth wheel do I need to remove air cilinder or leave everything as is and just use the air line connect it to dump and install switch in cab the picture is the one I have installed right now the other pic are the things I need is there anything else I need

 

The truck has one but I can't pull it cuz it's locked with air cylinder I have to drain the air or pull valve in cab when parking brake is set

 

Personally it's a stupid set up I think it's for lazy driver no offense but I rather have hand pull with no air cylinder and airbags dump then this thing the reason why I want it hand pull manually and have airbag dump is few times I had trouble dropping the trailer what I mean kingpin was unlocked but I could drop trailer it seemed like the top plate welded to bottom trailer I would have that problem if I just simply push the button air bags deflate and drop the trailer

 

The air release is not the problem it releases the handle fine the problem is sometimes I can unhook the trailer it seemed like the plate and trailer bottom are welded together no matter what I do drive back or forward nothing happens