diff ../inc/solutions.php ./solutions.php

166c166
< 				3 + ($rackData['height'] - $unit_no) * 2,
---
> 				3 + ($unit_no -1) * 2,
168c168
< 				3 + ($rackData['height'] - $unit_no) * 2 + 1,
---
> 				3 + ($unit_no -1) * 2 + 1,