+1 It probably is the contacts inside the stalk switch. Fixing that won't do anything to address the mechanical action of the switch, which also will wear out eventually - mine started switching the lights to bright every time it canceled a left turn, simply because it had lost spring tension on the action...
With 250,000 miles on the tub it was just a no-brainer to replace the stalk. Difference in feel/action was pronounced - swapped in a new washer stalk about a week later
