Did use the search, but.....any little things to look out for when cleaning the carbon out of the head of this Shind.? (never done it before) does it use a gasket? (just started losing power today, like it's not getting enough gas) new plug, clean air filter, new fuel filters,fresh 2-stroke. Can remove the air filter and put my hand over the carb., nd it will rev up. Seems like a problem with the main jet. Sound like a carb prob.?