Several things you need before starting this challenge:
at least 5 hands to hold all the pieces
2 of the hands should be quite small and belong to a surgeon
the eyes of an eagle to see the contact patches
the patience of a saint
I have none of these so don’t critisize my soldering 
@abcd567 - by the time there is solder on the “bug”, it is impossible to see which is pin no 1.
A photo from my camera of the final piece.
https://img2.brain3.photobox.com/43652298763dd30745b047825b7a44f58f26a1bb8906cab156f588ad9ea1b83864d5ef2f.jpg
The SAW filter naked.
https://img2.brain4.photobox.com/44224746c806cbc68c666413799618fab0b0efd244b4e2dc9fcaec8269f799792e7df10e.jpg
I have put it on test with rtl_panorama. It doesn’t seem to matter which way round it is connected. Maybe this is because I’ve fried the internals with the solder? It certainly removes frequencies at 850Mhz and 950Mhz but also at 1090Mhz 
I’ll put it in the live system tomorrow.
{Edit} added the photos from my camera