Decided to take a look at what this rattling sound was ive been hearing for a while. It seems to be coming from the the very end of the snout/pulley. It's not just at idle, it's at all ranges. Was thinking coupler but that's been replaced, or rotor pack. But when I used the stethoscope, the further down the snout towards the blower I got, the less the the noises dimished. Then increasingly obvious as I went back towards the pulley...
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