OpenSite Parking distribute

I have a simple rectangular parking lot with one interior bay (2 aisles).  The parking lot properties has a aisle width of 25'.  When the lot draws I have a aisle at 25' and then the remainder of 38' for the other aisle.  

Is there a way to automatically distribute the extra aisle width across both aisles?

It's easy to do this manually on a small lot but on complex ones not so much for me.