We noticed the absence of the check spring - so far the only deficit, and a new one is on order. I just disassembled the tension unit, and found that the remainder of the check spring is stuck inside the body of the machine, inside that hole, actually.
How do I remove it without breaking it?
I would go to the TFSR manual and read everything about your machine. If you blow up the pics it might help.
To get that off, I would put a screw driver in between the posts with the nut still on it and turn it gently and see if it comes out. TFSR manual link:
http://www.tfsr.org/publications/tec...achine_manual/
I am using Tri-flow on 2 screws that are frozen - does Tri-flow cause any damage to the finish? I don't want to add insult to injury.
I've not had any damage I've seen one person complain. I would not let it set on the finish but I would for sure use it.
I don't know what is wrong with your bent HC or how to fix it - a picture might help.