Front hatch/rear hatch clips for t350t

[aaronc]

Hatches are pleasently suprisingly quiet below 100mph, but at around 120mph and above (as found out on the back straight of Goodwood) its sounds like a mini hurrican is happening just above my head.

I understand there are extra clips you can fit to tighten the hatches down even further, does anyone have any info of where you can source them and how to fit?