Sound like, (smells like?
), antifreeze burning
... methinks you may have an internal leak somewhere? ... exaserbated by your choosing to run your motor hotter!
Your recommended fuel / oil mixture is 32 to 1
of which most racers push it to 40 to 1
... however 50 to 1 is in my opinion way to little oil!
In a nutshell ... More oil is better because it:
Improves ring seating and sealing
Reduces overall sliding friction on piston skirt, ring(s), and bearings
Lubricates the bottom end crank bearings more effectively.
Also, contrary to popular belief, additional oil does not adversely affect carburettor jetting, unless at extreme ends of the spectrum, ie. going from say 100:1 to 15:1
That said ... methinks you should find out what has been damaged by the lack of lubrication
and deal with the fact that you ride a two smoke ... It leaks oil on your garage floor
, it smokes
AND IT DEVELOPS MORE POWER THAN A FOUR STROKE!