[bluGill]

Some does. You don't need perfection of distilation to make a difference.

[btreecat]

More is in the tails, neither is enough to be of concern.

[bluGill]

In small batches. In very large batches there is enough to be a concern. Where the line is, is something I don't know but you better figure out if you are going to make concentrated alcohol.

[btreecat]

Batch size has nothing to do with it.