mdooher: I see many comments about how these installs are free... No they are not, the government (you and I ) are paying quite well for them.
If you are a contractor and think this sort of work is acceptable please stop. You are not the sort of person the rest of us want doing this work. If you would like to do better but can't afford to, then you shouldn't have signed the contract in the first place.
I take pride in my work and I take pride in the many people I have trained to do this sort of work. This stuff is an embarrassment, and an insult to all good tradesmen.
If you work for a contractor who thinks this sort of thing is acceptable, don't do it, have some pride, Find a professional to work for.
What do you mean open up the wall?, don't own any extension bits? Don't know how to use fish tape? Can't go round the other way? Don't know any good sparkles or plumbers to ask for advice?