For the most part, this is a good kit. The only real problems I've had with at least the last 3 kits is the 3-way lever switch. What problems: 1. The barrel knob doesn't stay on well. It's not tight enough and requires a touch of glue to keep it in place. 2. The connectors and rails have to be bent to ensure contact as they seem to have too much flexibility and lose contact easily. I've had 3 comebacks from clients with the last 3 kits. The pots are great, the caps are too, so no problems in these areas.