has anyone had problems with their stovebolts missing out alot with headers on? i still have the original intake manifold with a Roch. 1 barrel. i've been told that i need to warm the intake manifold (it makes sense to me as the original exhaust manifold diverted heat to the intake manifold) or it will always run badly. There is a heating plate available at Langdon's Stovebolt Engine Company. but is it made to work on the original intake manifold or the dual/triple carb manifolds?