Firstly all my communication with Lenny was brilliant. He has great ideas, listens well and is a brilliant communicator. However, after waiting for my project to be worked on - at first glance it didn't look aesthetically how I'd imagined - far from it. I was confused by this and had to a wait a weekend with a not-so-great live website until Lenny was able to rectify this for me.
My advice would be to take you site down whilst it's being worked on and agree firm dates as to when the project is completed.
Overall Lenny was very helpful and in the end he fixed all the design flaws and did this in the time he said he would....