So I have a 97 kx100 and it mysteriously decided to bog out one day when I was riding a back road to get to my house I was going at a pretty fast speed and it just bogged out. So I didn't bother trying to start it again becuase if it was a piston I didn't want to make it any worse. So I got it home and took my carb apart and it was really dirty so I cleaned it up. Then I went and rode it again and it takes about 15 minutes for it to bog out but it would start right up again. I put a new plug in recently before this all happend so I put my old one in and it did the same thing. I cleaned my petcock on my tank same thing did it again. So I figured hell with it since it'll start right up right after it bogs put it might be electrical so I put a new coil in it tried riding it today and same thing it bogs out. Oh almost forgot I got a bore sighter and my piston isn't seized at all but I did just get my top end rebuilt recently and I put namura piston in it if that has anything to do with it. Is there anything else I could do clean something check something? Please help!!