My calculation always starts with a value of 3 when nothing is selected

Also the calculation  widget doesn't appear to be calculating the score properly.  It starts at 3 when nothing is selected?

Looks like you have an extra linebreak on the LENGTH Dropdown Field.

And this empty space has a Calculation Value of 3:

To fix this, remove the extra linebreak on that dropdown field. This should also remove the assigned calculation value below 1-2 cm.

Related guide: How-to-Assign-Calculation-Value