I don't see any more suckers.

Shaping of a plant can be influenced by many things, including suckers.

To produce a well-shaped plant, you may have to do some manual manipulation.

But let the plant relax a bit first. Even removed suckers may have a lasting effect.

Few of my plants are well-shaped, ... because it hasn't mattered to me much to this point. I am now tending toward plants that have more natural symmetry and a flatter form ...

Even it is not perfect - you have a healthy plant with tons of buds - enjoy the bloom and stop bothering it. After it is done - you can pop it out of the pot - and see what's going on - I think you have an underground sucker with buds or you didn't remove the suckers totaly - and the stubs sent bloomstalks - who cares - at that point - very soon you will have so many flowers - you wouldn't be able to see anything under the them.