Hello I recently got a MX 175 from my grandpa and I need some help! It has a seized engine. I put some Marvel Mystery Oil through the spark plug hole. It has been sitting for about a day. Anyone have any other suggestions! Also the clutch won’t engage. I pull it in and nothing. My grandpa said the clutch plates are probably stuck together from sitting for to long. I don’t exactly know how to fix this. I just need a little bit of extra help!! Thanks!!!