I am sitting here , lunch roll in one hand typing with the other so it is not my time you are wasting, it is your time.
There is no magic bullet, no secret switch nothing that words will fix it is spannar time weather you want it to be or not.
This is not a political inquirey where you can just keep getting more opinions till you find the one you wanted to hear all along and ignore everything else then blame the adviser when it does not work.
Days ago you were told what was the possible causes and what was needed to be done to verify which problem you have.
Going to a different sub section of the forum is not going to make any difference the problem is a seizes engine.
IF you like you can go to another site and they will all offer their condolences for your engine and pray for you, but that is not going to get you back on the grass until the engine gets stripped down and the cause of the seizure determined.
Now if you want a different opinion , try this:-
Since Tecumseh went belly up there have been a lot of parts that Lauensons ( the original owners ) are no longer making.
Thus doing a major overhaul on a Tecumseh engine can be a problem parts wise.
So if you walked into my shop I would send you out with a new superceeded Briggs engine and a wiring kit ( which I make ) to fit in your mower.
And because I am a nice person I might even give you a $ 100 trade in for your old engine .
Now freight rates US to OZ to US are a might on the expensive side so you would do better by buying one locally.
At this time of year lots of engines , particularly new model pulls come up for 50% of the retail price
These are the places I usually get complete engines from, generally a pallet load or 2 per season.
https://www.smallenginesuppliers.com/
http://www.smallenginewarehouse.com/
http://www.surpluscenter.com/
And you will find the repair manual for your engine here
http://www.mymowerparts.com/pdf/Tecumseh-Service-and-Repair-Manuals/