Hi guys Ive got a nitro ftx frenzy with a point 21 engine and the engine doesnt seem to start has been running ok up until a few weeks ago. And I think I'm loosing compression coz when I prime the engine and pull the pull starter it doesn't get harder to pull when I over prime it. So I don't know how I'm loosing compression does anyone know how or why.or is it even a compression problem, can someone plz tell me what I can do and give me some advice