You seem to be taking extra steps to ensure that you have redundant backups in case something happens to one of them.

The best way to achieve this goal is to have a fragmented backup, say a 3-of-6.

This will give you 6 pieces of paper, such that any 3 will recover your wallet.

Any other attempts to duplicate your backups increases the ways your bitcoins could be exposed to an attacker.

I recommend that you throw out your current wallet, and start over with the following steps:

1. Create a new wallet on the offline computer.
2. Print a 3-of-6 backup with secure print, remember to write your secure print code on each page with extra careful penmanship.
3. Delete your wallet, and attempt recreate it from the backup on your offline computer with different combinations of 3 fragments. Repeat until you are certain that you will be able to repeat this process if needed.
4. Distribute your 6 pages to secure places and trusted people.
5. Then test your offline wallet with a couple small transactions.