My experience: over the life of a pair of shorts or bibs, the shorts or bibs change. Fit gets looser, chamois pads thin out, straps stretch.

The chamois thinning out may turn the OP's bibs into wearable items if he can bear with the hundreds of mile it may take to get there.

Both the fit getting looser and the straps stretching are reasons I no longer buy bibs. I find buying quality shorts (the same quality short is usually $10-15 less than the bib) and using clip on suspenders works better over the long haul. Yes, the suspenders stretch but the remedy is very simply - adjust the straps! (That I do not have to undress completely to do #2 is a very nice side benefit, especially at organized rides with Porta-Potties, both for me and those waiting.)

And the best, longest lasting and probably cheapest chamois creme (as long as you don't have to impress anybody) - Bag Balm, that formulation for cow's teats developed in the very early days of mechanical milkers so the cows would willingly step up and produce. The next generation milkers solved the comfort issues, but farmer's families kept the Bag Balm on hand for themselves for all sorts of uses because they knew it worked. $8 a can at any old school pharmacy. That can will last you years. I apply it liberally to myself before long rides or anytime I think I might have issues.

Ben