well 3 strong rear pulses you can feel like 6 inches away from spark plugs. front about 3 even but weak pulses. all apex seals look intact thru exhaust port.

 

so the front rotor just doesnt feel as strong on all sides, well if you have inspected through the exhuast port to see what the rotor housing looks like and it looks all good, and if this engine hasnt had good run for some time youll find that its compression will increase after being run