Just arrived at Chester Fairoaks. Set up, water pump on. Water all over the floor at some rate. Surge damper must have gone over winter as I could pull the top off with very little effort. Wardens gave me some no more nails to stick it on as a temp fix. Ordered new one off Amazon. Maybe worth giving it an inspection if you’ve not to avoid what we just experienced. Never even considered checking it. Also; although I’ll empty the fresh water and not turn the pump on, anyone know if I need to drain the boiler to fit the new one. Just a push fit from the look of it