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Hi folks, I am working on my second restoration, a really beat up Waltham A-11 (6/0 '42 movement). I've gotten the easier stuff cleaned and assessed and now I find myself staring down the balance and hairspring for cleaning and realizing that I'm not sure if the hairspring is even viable. Here's the stuff I'm hoping wiser, more experienced hands can help me with. 1. I was reading about some hairsprings having a Breguet coil - looking at the parts list for this watch, part # 26218 is listed as Balance, Complete D. R. Breguet. Is that indicative that this watch should have one? 2. If it should have the Breguet coil, does this look like it's intact? I couldn't find any good reference images for what it should look like. 3. I circled two spots (labelled A and B) in the first image. Are these areas where bends should be? I'm thinking A is damage and B is part of what a Breguet coil would look like? Curious to hear what more experienced eyes think. 4. Looking at the balance staff, it looks like maybe the bottom pivot is slightly bent? If so, is it bent enough that it would cause issues? Can pivots be straightened and if so, what kind of tool is suggested? 5. How the heck does the block at the end of the hairspring attach to the balance cock? I unscrewed it fine, but I can't figure out how it would reattach. The first watch I fixed was an AS 1187, the hairspring nub(what is this block called?) just slotted in and tightened, but I don't see how the mechanism would work here. Final image is of the underside of the balance cock. 6. Last question - I have an ultrasonic cleaner, tons of 99% IPA and warm soapy water. My understanding on a watch this old was not to put the hairspring or pallet fork in IPA as it could dissolve the shellac on the jewels. I don't yet have access to OneDip yet, are there safe alternatives to use? I'm in Canada, if that matters. I've read a lot of threads with folks saying they use lighter fluid, is that actually safe? So far, this watch is getting the following replaced: Mainspring (old - blue steel with a decent amount of corrosion present) Barrel arbor (hook is gone) Hack (broken) Escape wheel (broken pinion) Click spring (was entirely missing when the watch arrived) Crystal (the original one is comically yellow and spiderwebbed with cracks) It's been a fun journey so far, I'm really enjoying the slow, intentional work and care needed to do this properly. Thanks in advance for any help or advice you can share.