If you have access to stainless cap screws (Allen key type), replace the crappy Pozidrive screw that holds the saddle clamp for the "O" rings with a M5 one, can't remember the length offhand..it's around 30 or 40mm. If you have not got it finished by next Friday I can bring a selection over or you can get them from Nutters Fastenings, Long Acre, Nechells..if you only want a couple, they will probably give them to you.