Pieces of Tape for Hard Drive

I'm trying to replace the HDD on a mid 2010 Mac Mini with a SSD. I followed the iFixit guide (Mac Mini 2010中期 硬盘更换) but forgot to put the spacer on the back of the SSD to make up for the difference in depth from the original HDD. When I tried to put it back together, it wasn't fitting together properly, so the thermal (?) tape keeping the plastic cover and heat sensor on the hard drive (the "tape" seen in this Apple part http://www.amazon.com/Apple-OEM-Original...) and the top pad to the optical drive flex cable (just for illustrative purposes http://www.powerbookmedic.com/Mac-Mini-U...) lost all of their adhesiveness.

Is there any way to buy new pieces of tape without having to buy another heat sensor? Or something else I can use in its place? And what kind of adhesive could I use to re-adhere the top pad to the optical drive connector?

Please let me know,

Thanks