Glad you have relays in there.

You have narrowed your problem to the switch but it still could be an adjustment problem or the switch going bad all together. Daffy and Dave have given some good advice here about tilt wheel switch servicing and adjustment. Now it's time to get in there and do the work on the column. You are doing a good job of being our "eyes" and describing what you see to us so that we can help diagnose the problem. Have you tried losening up the column switch adjustment screws and moving the switch assembly back and forth some to see if the problem improves or gets worse?

Jerome