I know, another thread about knocking, but this is real knocking, need opinions please. Coming home from a trip 2 weeks ago, riding double, all saddlebags/trunk full, in other words, we were fully loaded, stopped for pizza. Upon start up to go on home, engine had a very loud knocking, the ball ping hammer type.... but, I had to get home, so I took off, easily and before I'd rolled 20 ft., knocking went away, and engine ran fine. Next morning, same thing, had 1 morning since, when it did not knock, rest of the time, if you shut down, and let it sit for 10 minutes, when starting back, it will knock, but goes away within just a minute or so, and runs o.k. My dealer's mechanic was not there Monday, but my dealer said it sounded like a main bearing..... Now, any one else have this issue, and what does it sound like, just looking for some input before I pull into my shop and start a tear down, too much riding season left here in Arkansas... Oh, it has 39,000 miles on it, 05 DL1000. Input welcome at this point... I think I may have lugged it too much over that weekend, spent most of the time being a good fellow biker, and was following a couple of gold wings around!! I was most patient I was!! But that's another story... Please let the comments begin, and thanks for any and all input..