Hi Just went through a bunch of parts I had bought from the filling station when I first bought the truck a year ago, and found a replacement knob for the wipers. My current one, is really beat up, like a previous owner had painted it, and removed the paint multiple times, and is rough and kind of nasty. SO, I go to put the new knob on, and it is very loose. Looking at the bottom, you can see that it's not an exact match for the original. Before I start bending the the arms on the switch itself, any good ideas or tricks for making the new switch fit tight ?