If two or three pins are binding at once, i'd definitely have to say that you're using too much tension all the way around, even with your bogata. The bogata by design and principle, wasn't meant to be used as a rake and also is by design meant for keyways with a certain pin spacing, see Lockpicks - Manual, Sticky Rai's Bogata How-To, pg 6 as follows:
When using the pick, do NOT use a raking motion. Place the pick in the lock so that all pins are engaged by the ridges and valleys of the pick, and use a rapid rocking motion combined with a very small forward and back movement of the pick. While doing this, use a VERY LIGHT tension and a consistent bouncing of that VERY LIGHT tension. Sometimes I use a very rapid bouncing of tension if the lock doesn't open right away. The faster you can jiggle the pick in a controlled manner and bounce the tension to match the pick movement, the faster you'll open the lock. This is from my personal experience, and I must say that once you get the hang of it the picks work like magic!
(Rai kick me if i've interpreted referenced posting wrgon in any way). Not saying it won't work on every lock you use it on, but saying that with some keyways and pin spacings, you'll find it more difficult than others.
That being said, I don't know if your bogata is one of Rai's or a homebrew of your own design.
As far as your tensioning issue goes, slip into Pick-Fu and check out my recent posts on a homemade weighted tension wrench and the concept behind it. It really sounds like you're just using too much tension for that lock. A good way to determine this is to visually inspect the plug movement after placing the tension wrench at the top of the keyway and letting it hang naturally. If the plug barely moves but there's still a bit more it can move, it's a tight plug and you need to up the tension just a bit. But if it moves freely all the way to a stop and can't move any further, then barely the weight of your finger is all it's going to take.
