Thumbheater/saver question

[TRHOD]

Hello all, need some help. I got the Proadvantage thumbsaver and the Moose thumbheater for my bike. the thumb heater comes with a 3 to 1 shrink wrap to help hold the heating pad on. My problem is that the shrink wrap is not big enough to go over the thumbsaver. How did you all overcome this?

Thanks for your thoughts,

TRHOD