I recently bought a tlr 1000 with 15,000 miles it run great.. Its my first bike like this, and son I changed the oil just to make sure and be positive that it was good. When I was finished I cycled it and checked the oil level and once it was good I took it for a spin and after a quick acceleration but not to aggressive it seemed to loose a bit of power.. So I pulled over about a mile after and when it got to low rpms I could hear a knocking noise not sure crime where except that it was in the engine.. And when it got to almost an idle it died. I checked the oil level and it was still okay.. I tried to start it again and it had some difficulty.. But the third time it fired right up but I could hear a low toned knocking. I immediately shut the bike down, and having started it again.. Before it died the first time there wasn't any smoke coming from the exhaust.. Does anyone have any clue as to what to do to determine the problem or the damage.. I have removed all plastics, carbs, plugs, exhaust,radiators already but not sure where or what to do next.. Anything would be great.. Also this is my first time ever to work on a motorcycle motor like this before..