Transfer 3G Antenna To New Glass

First I am not sure I am referring to this antenna correctly. On step 18 on this page it refers to this antenna as the GPS antenna:

iPad 3G Front Panel Assembly Replacement

but on step 7 on this page:

iPad 3G Teardown

it sounds like it is referred to as the 3G antenna. Regardless I am trying to transfer the antenna pictured in step 7 on this page:

iPad 3G Teardown

I can get the antenna out from between the glass and the frame but without using a heat gun I see no way of getting the antenna back in the new glass (no mine did not come with the antenna, and no I did not get it at ifixit). I have tried placing the antenna in place but I get VERY poor 3G. I looks and sounds like this is do to how the antenna is supposed to use the frame as an antenna.

Does anybody have any experience with transferring the Apple antenna to a new frame that does already have an antenna?

Thanks.