Hi all. I have a question about key fobs. I have a 2017 RPM 1500 and it got repossessed at the end of last year. I got the van back, but when it was taken they re-keyed it - deleting the old key transmitter numbers. I had a locksmith come out to reprogram the old keys and he tried but came up with a note on his computer that said old transmitter numbers, once deleted, can never be used again. Makes sense, but I was wondering about reusing the old key fobs. Is it possible to crack them open and replace just the transmitter? The old keys still turn the ignition cylinder and the door locks. The replacement keys apparently need to be laser cut and sent from FIAT at a cost of around $300 for one key. The MOPAR giants parts replacement website says they sell the just the battery / transmitter for about $4. Any thoughts?