Chasing down a tapping noise

Ok! I checked for exhaust leaks and I found one underneath the drivers seat where the header bolts to the rest of the pipe and another leak at #4 (not where I thought tge noise was coming from). 20170629_201049.jpg 20170629_201120.jpg I also inspected the push rods more closely and found #3 intake practically touching the head. I spun the rod and found it about 1.5mm out of round. A few others were a little bent too. So since it looks like a few rods need replacing I'm going to have a look at the cam and lifters.20170629_200838.jpg