Bread-Bakers v102.n054.2

R Dempsey asked about bubbles in pre-baked pizza crust.  I am also of the 
pre-bake school, so I have seen lots of bubbles in the 45 years I have been 
pre-baking them.

Perhaps you need to knock a minute or so off your pre-bake time.  I have 
always been able to cure the problem by flattening the bubble with my oven 
mitt as soon as it comes out of the oven.  This has to be an immediate 
act--just put down the pan and start pushing.