Well its been a pain so far (my hands are cold) but finally made a start and got the pipes in place. Filled with water and there wasn't a good enough seal so tightened the bolt up some more and the pipes are holding water. Now to attach the rest of the system and see if it works under pressure. Wish me luck

Actually I just noticed its not quite holding the water. Back to square one :( I'm gonna have to get some silicone or something on there