I suggest to both of you also to reset the needle settinges, and try to tune the engine again.... Remove the stoppers of both needles....and look at the manual for an inital setting of the low needle, if there is any, then with the carb fully opened screw the low needle in a way that there is about ~1.5mm gap between needle and spray bar, it is a good starting point, and close to what my engines do when they are set.<div>
</div><div>Saludos,</div><div>
</div><div>Jorge</div>