it was just a standard matte vinyl and i'm building a media/icc profile and the photo is of the test target it printed.
It isn't until after you print this test target you can adjust ink limits or build an ICC.
8 passes is below the recommended minimum pass count for adhesive vinyl on the Latex 260. 10 is the minimum pass count that HP recommends for this media class.
This is ink coalescence. It can be controlled through a combination of one or more of the following:
1) Reducing the amount of ink allowed to go down
2) Increasing the heater temperature in the print zone (if possible)
3) Increasing the pass count
4) Instituting an Inter-Pass Delay (Image Quality Maintenance Menu)