well,do the old carbs have the gold throttle slide barrell?.. cause this 1 does which i know for sure the new 1s do!....i bought it locally from an honest racer but only paid $60 so i am kinda still looking for the catch as to why he sold it to me for only $60....so far everything is all good!....when a motor is practically still new with tight pinch,does it show the brown fuel burning residue on the connecting rod where it meets the wrist pin?....or does that take time to build up?....cause like i said if i dont heat it up before i start it the piston will get stuck up @ tdc,and i was told it barely had 2 gallons on it!..just making sure it wasnt just pinched before he sold it to me to make it feel like a new motor!