I bought a 97 zx7r from impound and have been trying to restore her. She has good compression probably could use new plug wires but I do get spark in all plugs. But the left header pipe was fluctuating around 160 degrees, left inner pipe was around 440 inner right was 540 and far right was 211 degrees. ( as looking at front of bike) I was told that my intake manifolds were leaking air and that's why they were running lean. I bought used ones on ebay and they were nice and soft still no dry rotting. But the numbers above are what I read on my laser temp gun. Can I over tighten them to carbs I didn't think I did though. Or is this normal for this bike to run like this. It sounds fine when I rev it and at idle.