For some months now I have been making Altar bread for my church with varying results... Early on I had problems with the buns burning on the bottom. I bought parchment paper, but it didn't help. I finally bought new, shiny baking sheets and no more burning. Then they tended to raise too high, so I tried to flatten them more. Then they were still too high and not big enough around, so I made them smaller and flattened them more.
Today I tried again - and now I think they will be too small! Oh well... baking bread is an imperfect science. It is impossible to forecast how a given batch of yeast dough will behave until the baking is done! It depends on the flour, the yeast, the humitiy - or lack of it, the time allowed for raising, the temperature of the room, etc. But here are the ones I made today!