This is the screwdriver set from Harbor Freight --
Precision Screwdriver Set - 33 Piece -- The set was made in Taiwan and really is of decent quality. The security bit set is no where near the same quality; it's made of "cheese" steel. I actually bought this set some time back to use the tiny torx bits to open a couple of hard drives. The only possible issue with the set is that the handle you insert the bits into is hollow and if you exert too much downward pressure, the bit slides back into the handle. However, if you insert the extension rod fully into the handle there is no issue. At $7.99 it's well worth the money. With one of those ubiquitous 20% off coupons from Harbor Freight, it's $6.40 and then there's the free light they're always giving away.
I had no problem removing the solenoid for the aperture that has the red screw locker applied. There was no thread locker on the flash solenoid.
I double checked the resistance of the two solenoids with a second meter. The aperture solenoid was 29.7 ohms and the flash solenoid was 30.6 ohms.
---------- Post added 10-23-19 at 09:17 AM ----------
Regarding the capacitor in the *ist DS, it's located behind part of the camera's metal frame so it's unlikely that you'd get anywhere near it while removing the solenoids. On the other hand, I have no idea how the wires from the capacitor connect to other components of the camera, so it's possible one might encounter high voltage elsewhere in the camera. I used a screwdriver with a plastic handle and held onto the handle while shorting the capacitor by touching the two lead with the tip of the screwdriver. Got quite a "pop" and "flash" when shorting the capacitor, and it left a mark on the screwdriver, so the capacitor is nothing to take lightly.
With the *ist DS, I had to pry open the flash compartment to remove the screws inside. I had it open originally, but apparently closed it while removing other screws. So the lesson learned was remove those screws first, so you don't have to pry it open later.