Hi there another question for a beginner! i recently just fitted my t120r with some new amal carbs and i believe they came with a pair of velocity stack tubes.. I currently have a choice between the conical K&N air filters or the pancake ones. The Velocity stacks dont have a mesh grill on them just wondering what people prefer and is it safe to have no air filter and just the velocity stack tubes on your carb? Doesnt loads of dirt get in? Over and out!