Got it working.

Just had to hold down the right-click button and then click on the dial thing that controls rotation.

Thanks!

I've been using this program a lot recently and seem to have found a bug in Sam & Max that means I can't progress any further. In the revolving restaurant on top of the ball of twine, when you are looking through the binoculars to find frog rock you cannot right-click to stop the restaurant rota...