as I was taking old dampers apart to rebuild... I noticed that two "damper manuals" have a different O-ring placement in the cylinder end.

#42273 has the shaft guide then the O-ring then the rod guide.

#54000 has the O-ring, then the shaft guide and then the rod guide.



why the change? Which way is better?

Also the shaft guide has a little groove in it. Is there a problem with me having it face the O-Ring side?

Compare to some of my TRF manuals
The TRF418 manual Step 20 has groove facing O-ring.
The TRF417v5 has no shaft guide, but two O-rings instead.
The TRF417x has shaft guide with groove facing away from O-ring.

Now I'm totally

hoping it's much ado about nothing.