Thats normal mate you need to use over print, over laps and bleeds to fix the problem.
Nick pretty much nailed the answer there. Working with multiple foil passes, there is always the risk of misregistration between different passes. Plus, applying heat to the media causes it to expand, which causes the foil applied area to shrink ever so slightly when the media cools.
Please note:
This action will also remove this member from your connections and send a report to the site admin.
Please allow a few minutes for this process to complete.