What did the spark plug look like ? Compression tests ? 302 just means a misfire and could be a lot of reasons.
Do think that running over 200F all of the time is too hot but just my opinion. (alloy engines are less tolerant of heat than iron).
ps Had another thought, alloy heads are less tolerant of heat than iron. Also normal practise is to get the hot exhaust gas out of the head as soon as possible. According to the specs
, "The cylinder heads are made of aluminum, with ... integrated exhaust manifolds." Hmmmm.