Did I mess a memo about the new BL1850 5.0AH batteries where they don't fit in the LXT circular saw BSS611?   I got two of these new things, they are OEM, they fit in 8 other Makita LXT tools I've got, but they for some reason won't slide into my circular saw (the damn tool I need these for the most).  They slide in most of the way and then there's something keeping it from going in the last bit.  It's not the button thing.  Like I said these go smoothly into every other tool.  I can't see a dif