thanks for reply.
re: pfte flexible and rotate - understood.
re: my diagram - red arrows, the brace - this was loose (the two screws were loose), i tightened them, but as they have sliding grooves on it, what determines the position to put this brace at, before fully tightening?
my concern with this brace is that it is flexing somewhat; it is not cracked; but it s where the " PTFE Extruder Bracket AMS Error Fix" part is installed. it rotates on this brace. and my part had cracked, (the PTFE Extruder Bracket AMS Error Fix), and i just replaced it, and that is when i noticed the brace has some flex to it, and was loose (the screws), and that is what generated my concern.
AND, in order to replace that ERROR FIX part, i had to take out the PTFE tube, and that is where the blue arrow is pointing, to the extruder. there is not an easy way to get the PTFE tube out of there.
so, I DID order a new extruder part, AND some of the PTFE tube connector parts, but it still does not show how to remove the tube from the extruder. i understand you have to press on that ring, but that is not an easy task, and i can’t find a tool online that fit in there to compress that ring.
the machine IS RUNNING right now ,but i’m being proactive, because if it breaks, i want to get it back and up and running immediately, and play with repairing spare parts later; so if i have replacements, i can more rapidly change them, and fix the broken ones later