I have a 3 Phase Bridgeport with EZ Trak Plus and for a long time the start button was intermittent until now it just clicks. My unit has a large Controller Cabinet in the back. This unit does not have a drum switch. There is a Cutler Hammer Starter P/N A50BNV0A that may be the issue, but it goes for over $1000! Any one have any experience with this? tHANKS!