Thanks for your response.
Sorry that the 1.5mm thermal pad is not included in the kit of BP-VG3080ASF.
According to the installation guide, you should have 2.5mm X 4 pcs.
0.5mm pad should cover the little chipsets on the backside, to avoid any touching.
If you need any more help, please send an email to the following address.
We will check and reply to you. Thank you!