Hi guys i have a megaflow in my house which is about 2 years old. I recently installed a towel rail in my bathroom the pipes were already in position so it was fairly straight forward.When i first installed it every thing was working fine however lately i have been losing pressure and there is loads of air in the system also the towel rail has stopped working.I have bled the system countless times i also turned up the pump and turned off some of the other rads which eventually got the towelrail working but now its not again i have checked for leaks and cant find any . hope you can help kind regards spence