I've been carefully playing with leaning out my midrange. Had the new needle jets in started with the richest clip position and it ran amazing through the 25-75% throttle area, but would still bog pretty bad before the power band even worse than before. So I raised the clip to middle spot on the needle. Fuel was low so I threw it on Reserve and warmed it up good before ripping through the gears. Then I lost power rapidly.... FUCK! Pulled over and it bogged out and died. Wouldn't restart. Finally did, ran like shit died a couple more times on the way home (5 miles or so). Well I've been through a few seizes in my short time with 2ts. I coasted to my shed and tried to restart again kicker seemed soft. Left it for a couple days popped heads off and checked the cylinders. To my surprise they looked great. There were some very minor scratches on the right cylinder so I popped the cylinder off and piston looked new.
The only thing I can surmise is that my aftermarket petcock doesn't flow enough fuel through the reserve filter thing if it's partially plugged.
Hopefully bummer avoided. I should have a test ride this week sometime.
Just sharing my experience...
Cheers
My bet is this sounds to me as a fuel issue, unfortunately it has happened to me where it seems like I have enough gas but end up stalling out. Check Petcock, any fuel filters and check your cross-over as that could cause the issue as well.
That's good that the top end was fine. Was it an instant die or gradual? That can eliminate some possibilities. Hope you can find it