Teddy, I just had a look at that list of possible causes for engine failure. I think number 63 discribes ME to the letter.
"By far the most common cause of piston and engine failure comes from the loose nut that sits on the seat and overrevs the engine instead of shifting and generally doesn’t have an understanding of what really makes it work or how to properly keep it serviced".
Hope you get it all sorted properly and soon Tim.