38racing wrote: So the whole shaft unit would need replaced? .
Yup!
You're finding why these are built and sold so cheaply - they are designed for a couple years use and then toss em and buy new ones... They don't offer service parts for the shaft assembly because there's very little , if anything at all, that *can* be serviced.
By the time you get through 5 years, you'll probably have spent $250+ on disposable weedeaters , compared to one time $159 for an Echo GT-225 (comparable model with curved shaft) as Echo, (and I assume Stihl, Dolmar) have a 300 hours emissions certification (Husqvarna/poulan/weedeater are only 50 hours)
How poor are they who have not patience. What wound did ever heal, but by degrees? - Iago (Othello Act II, Scene 3)