acce\sash system bug

[bumxd 20]

hello, i find bug in system acce:

Suppose there are two sash of the fourth level
In one case, the absorption of 20
The second 15
With an absorption of 20 we put on top and as a result should turn out either 20+, or remain the same
But right now he can do only with absorption 11, etc.

how fix that?

[bumxd 20]

i mean what when i combinate example: sash1 85004(15%abs) with sash2 85004 in result i should have 85004 with(15%abs+) but i can have bonus and 11-15% too.. this bug