Hi I recently purchased an ARC PRO and I’m having a few issues. on the quick start guide the diagram on page 7 shows 2 cables to be inserted into the power base but I only have 1. I can’t seem to be able to calibrate my cars or set up a pace car. No laps are being registered and my lane changes are intermittent. Is this all due to there being a missing lead for the power base. unfortunately although the equipment was brand new it came unboxed from eBay and I bought it at Xmas and have only now got the digital cars to test it. any advice would be appreciated thanks