I have a question on how often do you guys change your plugs on the wing. I have a 95 1500 SE and changed the plugs (NGK) about 45,000 miles ago. I plan to tear the bike down next weekend and do the timing belts, oil, air, fuel filters, water pump, antifreeze and oil change. Im debating on doing the plugs while its apart. What are your guys thoughts on the plug life and being changed while I have it apart?