I just bought my K1200LT a few months ago. When I got it, it ran great, with just some erratic idle.problem. The bike was from an estate sale then the new owner decided to quit riding after they were able to adopt a child.and sold both his bikes. So, he told me about the erratic idle and that he had put some Fuel Injector cleaner in the fuel. The idle problem then started causing the bike to die at times when going to idle. And even while running at speed it would stumble at times. I decided to put in iridium plugs and upgraded fuel injectors. I'm putting them in this weekend. I have a Clymer manual, but I'm wondering if anyone has seen this problem before and has any advice.