Custom brush spacing

I’m trying to get a custom brush to be ‘spaced’ consistently when drawing. I would like to be able to set a specific pixel distance from mark one to the next, You can kind of get close to this using the spray tool and setting the width to 1px but its not very consistent as shown by example 2, 3 and 4.

I am new to Aseprite so perhaps I’m missing something? Or maybe there is a script that lets me set a px spacing between each custom brush ‘Stamp’?