The #3 is giving me trouble but I'm sure it's me that's giving me trouble, not the lock.
I haven't been trying to rake because I wanted to focus on single pin picking. As I said above, I single pin picked a Masterlock #5, which is not a big deal to someone with experience. Next stop... the smaller Masterlock #3. I've probably made 10 or 12 attempts to get this lock open. I started by going too fast. After I slowed down I could feel the pins moving and setting but the lock wouldn't open. I varied the tension, used colorful language, gave up forever and an hour later was back at. Ie. usual new picker methods were employed.
About 10m ago I got it to open. I could feel the same pins setting and I got some rotation but the lock didn't open. I was at the same place that I've been numerous times except this time I added more tension and got the core to move some more. Click. It opened but the core rotation felt "gummy" for lack of a better word. So gummy that I used a small screwdriver to turn it.
The lock is at least 10 years old. I don't know where the key is but I probably have it on an old keyring somewhere. I sprayed it out with WD40 but only to clean it. The core rotated back to center by itself once I sprayed it out. While it's open I'd like to clean it as best as I can by soaking or whatever is recommended here.
The lubricants that I have on hand are:
3 in One oil (probably not the best choice)
3 in One Dry Lube - this stuff dries fast
CRC Dry Moly Lube
Spray on High Performance Silicone
Do any of these look useful?
This lock will spend the rest of it's life as a practice lock.
I've picked my American 5200 with a Lishi. I guess it's time to tackle that one with a pick.