It will be necessary to determine what is leaking.  A leak will appear to come from the left side because it is lower.  It can be the head plug leak or from something else.  Clean the engine thoroughly take it for a short ride and check for leaks.  spray some foot powder on suspect areas before you run it if you're having trouble locating the leak.

Blueing is generally caused by the lean jetting that comes from the factory.

Poor starting can be several issues, dirty carb is typical if it's been sitting for a long time.

now in the great white north eh try to find a match set of tires.any good tire combos out there.

thanks will do that.