I have noticed many like to run filters in their plane's. I never have installed line filters in any plane glow or gas. The only filters I run are in my fuel jug and one in the fuel deliver line to the plane. Think about it any kind of restriction will make it harder for the carb diaphragm to pump the fuel from the tank, same with any glow engine and the small amount of muffler pressure some deliver to the tank. Unless the filters are considered free flow, such as a fine screen mesh style filter. Every so often, to see what the condition of the carb diaphragm is in. I will leave the canopy hatch off and run through my method to start. Choke on, throttle open, ign. off. I never flip the prop. I just bump it through comp. as many times as it takes to get the fuel into the carb and watch to see how much fuel is pulled into the line to the engine, with every bump through comp. This will also help when you suspect you may have an air leak some where. Engines and carbs in good condition will usually pull the fuel in the line to the engine anywhere from 3/8 to 1/2 an inch every time I bump the prop through compression. This way I know how many times I need to bump the prop through comp to get the fuel in the carb. Then choke off, throttle set to low idle Ignition on, flip once or twice and it is running. After the first start of the day it is usually one to two flips, with out choking, After a season of flying it will take many more times bumped through compression to get the fuel in the carb, when this happens it's time for a carb overhaul FWIW