Hi all. I have an HL100 thats got serious vibration going on somewhere in the pole. Ive taken off the blade head and with the engine revving the vibration (and clattering noise) is coming from the pole, somewhere. The rod inside rotates freely with the fingers so there is no obstruction and the rod doesnt seem bent. I plan to take it apart in the next few days when I get a sec, just wondered if a…