In reply to gear boy:
"ultimately even though lots here have said its normal for lift and blisters, it isnt.. its just a bad fit.."
Ok I've spent ages over the years trying on many pairs of B3 boots. I've even bought boots on ebay second hand and resold them on just to try them out! I've also owned three different models of B3 and three different models of B1.
With my heels the cumbres reduced the heel lift by the most as they have a very shaped heel that doesn't give. These boots gave me the worst blisters out of any boots I've ever worn, despite fitting the shape of my heel perfectly!
I think for my feet it is normal to get some heel lift if I don't want blisters WHEN WALKING (not CLIMBING). The foot naturally launches off the ball of the foot and toes when walking, this puts pressure on the heel if you have a rigid boot as it naturally wants to lift, it is impossible to get zero (I mean zero here) heel lift IMO, adjusting the way I walk does help a bit IMO. As mentioned doing up the boots tighter just increases the pressure on the bony heel and reduces the area rubbing. This in my experience with my heels is actually more likely to produce a blister as a smaller area is getting rubbed harder.
For your heels what you are saying maybe true, but don't generalise for everyones feet!!!