I don't know what is going on with Tower. Your engine is still offered and is in stock, but no parts. My 120 Surpass II has a bad head,(stripped glow plug) and it is the same head as the 120E which is also currently for sale. The head for that is discontinued. Seems to me that if Tower isn't going to stock parts for an engine, it time they have a very serious fire sale on the ones they have in stock.

Don