tolerance problem

I am trying to set a bilateral tolerance of +.005/-.000 on two dimensions. Solidworks will only set a +/+ tolerance and the precision is weird. See attached files. Any suggestions?

Thanks,

Mike Lydon

old Dell workstation

P4 2.40GHz

1.5 Gig RAM

NVIDIA Quadro4 900 XGL

SolidworksDrawings And Detailing