All is well except CO2 holes

Toast

Why can I not get large CO2 holes. Mix good / 1st rise very good / 2nd rise outstanding.

Am I over working the dough? The bread taste good, but has the look of industrial white bread.

Thanks for any insight.

There can be many reasons for lack of large holes, but here are the top 2 IMO:

  • Too low of a dough hydration - not enough water in your dough
  • Overworking the dough - intensive kneading vs. stretch-and-fold

Are you getting good browning of your crust? If not you may be underproofing, which is a 3rd possibility. 

How are you kneading your dough? 

complete, detailed info would help people to provide more informed replies than they can now.