Hi All— Really struggling here. I was riding fine at 30mph and slowly came to a stop when engine idled down and died. Can’t get it to start and there is a noticeable “squeak sound” near the cylinder area at the END of the rope pull only. I have inspected clutch, cleaned carb jets, inspected and retorqued head cover, checked the valve clearance and finally..saw the oil was low and dirty! I just swapped it out several riding hours ago and already dirty. No leaks so the low part is on me I guess but I checked not long ago. Also, the plug is quite lean and grey so I know it’s pretty starved for fuel. Riching the screw out on the carb doesn’t allow it to start or seem to help. Have the rings warped? Is my engine done if it got too hot for a bit? Am I missing something? Anything that makes sense now or do I need to open up the engine and see?... Thank you for any sound advice.