Or, change the grip in the gun that doesn't work. If you are willing, take the entire grip assembly from the working gun and put it on the non-working gun. This is assuming you have an S_I type gun.
I just have to make sure my order is 5 lbs or less. Anything over 5 lbs and I get charged $12 for shipping. So for me the EDGE program is worth it, I just have to break up my orders to make weight. BTW the $12 shipping for over 5 lbs is a reduced charge (about half of what it would cost).
If your main bag has zipper closure then I highly recommend you cable lock it to the bag or other big item in the bag.
Airline employees know which bags have guns in them too, not just TSA.
I use them on my open guns and I like it. Try it out and see if you like it. Some do and some don't.
I did have the mounting area milled about half the thickness which brings the pedal closer to the gun and gives me a more consistent grip.
Put more of a bevel on the corners of the firing pin stop where it mates with the extractor. It, the extractor, has to be able to pivot a little more on the fp stop.