I would definitely run a filter before the fuel pump and have for years, fuel quality (E10) sux these days and non-ethanol fuel can really help. Added an on demand flow through electric helper fuel pump after a filter to Blue for those hot days. Got really tired of being stuck on the side of the road waiting for the steel fuel line to cool off.
Now that temps have come down it runs just fine without it. Big heat source is the mechanical pump to a steel line, it radiates the engine heat and causes the fuel to boil before it gets to the carb. Lots of folks don't run the mechanical pump any more.