Hi hope someone can help me I had a new shower put in in may was working ok for about 10 weeks then started leaking from the pump,we replaced the flexly pipes on the pump all was ok for 3 weeks then the pump started to leak again ,I phone the company who we got the pump from and they sent a plumber out he said nothing wrong with the pump but it has got flux in it ,from when plumber didnt wash hands after using it ,so Please can someone tell me how to get the flux out