i have grey flexible piping attached to a copper 3 way adapter under the house. one pipe is leaking at the adapter. there is a exact 3-way above this assembly and no leak. i have tried a clamp, no use. can i cut the copper adapter out and put a new 3 way t-adapter? and what do i use as a sealant/glue between pipe and adapter? the clamp could not have been all that was used. thanks!