Silicon on the other hand, does not leave marks or transfer heat in such a way to leave burn marks
i slightly disagree with that one.. my starter has a silicone insert and i still have marks on my spinners.. not that i care they are there for function over form. could be junk @$$ plastic tho.
if your engine wont flick start then theres something not right with it,
not neccisarily.... i dont like to flip start my .60 sized motors... i cant get my 65 to flipstart ive only tried one time tho, but theres nothing wrong with it.