If you're experiencing any type of acceleration loss/bogging/hesitation. Check your Return Line Check Valve!!!
Also, don't run a 10 micron fuel filter unless you have a pristine tank. It captures dirt like wildfire.

Just my .02.
Happy Rotoring.

 

Where is that check valve? How can we identify it?

 

the check valve is located in the engine bay on the return line. its aluminum.

 

Okay so i found it and i blew it out with my air compressor. I was gonan buy a new one from az for the hell of it cuz it doesent look too expensive but they said its a dealer only item. When i blew in one way no air came out the other end.. and when i blew in the other way air came out but so did alot of dust particles. also it had white dust particles around the things that go inside the tubes. Is it okayz/? or shoudl i buy another one.

 

It is a one way check valve, it is supposed to only flow in one direction (to the tank, not to the carb). MAKE SURE you install it the correct way! All the chunks you blew out of it is a good thing, now it can do its job better.

 

This is what it looks like.

the airflow goes from right to left according to this picture. The side with the indentation is the one coming FROM the carb.