hi i got a siberian model L ser # l4b1290 for free because the pipes frooze this winter. most of the leaks apear to be at the elbows at the jets. does any one have a diagram of the plumbing of this unit and do u think it is bettr to replumb the whole thing or just the broken pipes, also to check for leaks can i just fill it or do i have to have the tub hooked up and running sice location isnt near 22o right now Thanks tom