reported 'Aux Gallons Ext' failing to appear if external tanks on stations 3/4

[zZzMan]

Hello, This bug is the failure of OSB L5 on the fuel page (Aux Gallons Ext) fails to appear when adding tanks to only stations 3/4. The OSB still works, but the text does not appear. Please refer the to attached track for an example of the issue.

AH64 Tank issue.trk

[BIGNEWY]

I have reproduced and will report 

thanks