bed's either not completely flat or it's not calibrated properly.
Also try it at 100 - rather than 110.

The thing about abs is that while it sticks better to a hot bed - having the bottom layers hotter also increases the temperature difference further up the model which is what cause the lower layers to shrink and pull the model off the bed.

Since I've added a completely flat printbed to mine I've eliminated lift and warp.

Also use blue painters tape - I use duck brand. You'll need a flexible and very thin scraper to get the models off !

What printer do you have ?