WG K7000 Pre-cap questions

[Captain_Dingo]

I've finally gotten around to getting the replacement parts for my K7000.  I stripped it down today, and when I flipped over the chassis board, I found a few extra parts from previous repairs.  I want to verify what I'm seeing with others and get any comments from the experts.

• There is a jumper wire from the negative pole of C45 attached to a ground point.  I'm assume this is due to not being able to get a solid solder joint on that leg when the caps were replaced by the previous owner.
  
  
• There is a capacitor attached between the negative pole of C50 and the leg of R75 that is connected to C52.  I don't know why this is there.
  
  
• There is a 650 ohm resistor attached across R83.  I believe this is the same value as R83, so I'm wondering if the original resistor is bad (open).  I haven't had a chance to desolder anything yet to test that theory.
  
  
• There is a 330K resistor attached across the vertical hold pot.  I assume this is just to change the resistance of the pot and put it into a range that allows the control to work properly.
  
  

A picture of the back of the board is attached.  Can anyone confirm my assumptions and also comment on the ones I wasn't sure about?  Are any of these common repairs or fixes to this chassis?  When I put the new caps in, should I just leave all of these extra pieces around?  My plan here is to swap the caps and the flyback using the kit I got from Bob Roberts.

Thanks!

[SirPeale]

That actually may be factory work.  I've seen a lot of chassis' with similar parts on the solder side.

[Ken Layton]

Yes, those were all put there at the factory. Leave those parts alone.

[Captain_Dingo]

Point taken

Thanks for the help.  The only reason I assumed it was from a prior recap is that there's some blackening on some solder joints as if someone got them too hot while working.

I'm off to heat up the iron...