How can I make check boxes all fit perfectly in the space and match?

You can also start with one field that is just as you wish, and right-click and choose Create Multiple Copies...

Then you can dial in precise spacing, etc.  This technique is not for every situation, but for the right ones, It's a great trick. 

My best,

Dave

Just to add, before distribute, set first and last field, then use align right/left and distribute, that way all fields in between will be evenly distributed. At least that's what works for me 🙂

Go to Prepare Form mode and manually adjust one field to the correct size and position. Then select all the fields with the mouse and right-click the field you matched perfectly, and then select Set Fields To Same Size - Both, then right-click it again, select Align, Distribute or Center and then Align Right.