Hi....found your name by searching Google. My repair technician tell me that although my 9850 has very low hours, something in my head assy is bad. It's not worth it to buy a new one, but I'm hoping maybe you had a used head assy. Thanks! Lee Lee Troxel 407 Windgap Road Flatrock, Newfoundland Canada A1K1C4 709-437-1456

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