This has been done before but here's my version. The soldering around the pump tube was leaking bad, so i thought that cleaning the surfaces and retinning was a must. I made a thingamabob to hold/handle the pump tube. An old defective NRV and a piece of 5mm steel was brassed together. And crooked it is A slight heat with a torch and out it went Heres the crummy soldering Thorough cleaning and retinning Resolder and clean with steel wire brush Water test and no bubbles Some cleaning is needed but now she works again