it was not to bad of a job one of them is in a weird location to get to but other then that is was under 15 of work after i got both of them . yes i used the doorman part.

to take the old line off you will use the plastic deal that is on the line then breack if off the new adapters will not use them. To reassemble just push the line in the adapters until they click give a tough to see if they are in all the way if so then you are done!