ottawaair
New member
I recently picked up a blown 780, parted the sled but it had carbs bored to 35.5mm so i thought i would try them on mine. They seem to run very good on bottom & top, but at about a 60mph pin it, they seem a little flat, what should i be looking to do to cure this- raise/lower needles, air jets? cold air kit to flow more? running 152.5 mains & not sure on the rest, just wanted to try them but was pretty impressed so now i want to try to dial them in.