My friend has a 201 genesis. An he told me theres some grey stuff on the plugs. I think its his pistons burning up but idk i dont want to tell him any false info. He has also replaced the carbs. But not the fuel lines. I tried telling him the lines rott from the inside out. But he keeps telling me he has perfect fuel flow. He also replaced the cdi, coils an stator. He also told me he ran aground a few times. When it runs he told me it takes off fine then falls on its face. So im thinking its running lean an or when he grounded out the prop got messed up an its cavitating. He keeps doubting me.