First guy I had was very helpful, realised a few things needed changing before he could final commission and also that the wrong part had been sent so organised for that to be changed and rebooked. The second guy was much less helpful and found more problems than solutions. Also on the 3rd visit, said he would be there at 8am and didnt arrive til 9, which apparently is as early as he ever starts. The scheduling team however booked him for 8. The scheduling team also don't start until 9 so when I was calling repeatedly when noone showed up, I had to wait until 9 for an answer.