Good technique mate ....I would thoroughly disagree about the silicon though ....you even said "despite what the manufacturers tell you" !!!! .....the manufacturers tell you not to use it for a reason - because many seals these days are made from materials that are far more complex than standard rubber ......often silicon can PREVENT a proper seal AND/OR, cause the seal material to degrade prematurely !!! .....personally, I follow the manufacturers instructions, and leave the bath panel till the very last job ...that gives me plenty time to test the plumbing working in varying situations ....BEFORE I put it to bed :hurray: