It is a little hard to tell by your pictures but it does look like you have the rudder hitting the hinge post on the vertical stablizer. Here's the rub. You want as little gap as possible between your fixxed surfaces and the moveable surfaces. The tighter the gap the better response you get from control inputs and the better your plane flies. However, if the the control surface is not working properly then you've got a problem. The solution is to properly bevel the leading edges of your control surfaces so that the hinge point and the point on the bevel are one and the same.
In your case, you can cut the hinges and install new ones leaving a slight gap to free up the surface. Before doing that you could try slipping a couple of playing cards into hinge gap and try to GENTLY crush a little balsa out of the way. Be careful, but it is worth a try before cutting the hinges. Start with one card then go to two. Don't force it just deflect it a couple of times then remove the card and check it.