Art when you say its still running hot and how fast it runs hot. I have been working on cars for 30 plus years. Its getting hot way to fast so from what your telling me that the plugs were pearl white is a lean condition and can be caused by many different things and a vacuum leak is one of them. Art if you can drive your car down the street as you change things it might help you better. The brake cleaner is fine to use just try and get the idle down as far as you can. Then spray it where the intake mates with the heads to see if there is a change in the engine.