Cluster Housing Refurb

So I pulled my dash gauge cluster to do some work behind with wiring and ultimately refurbish the cluster. I've gotten some good tips on do so, but looking for the best way to remove the plastic rivet tips that hold the bezels in. Those posts are pretty small for reattachment and would like to retain as much of it as possible.

Possiblities:
1. Cutting
2. Grinding (dremel)
3. Melting (small torch, lighter)

Here is the front of my cluster and why it needs doing.IMG_0666.jpg IMG_0667.jpg IMG_0668.jpg IMG_0669.jpg
Also, the black area below the gauge name is rusty, dirty, etc and needs addressing.

So looking for the best way to remove the bezels without destroying what is left.
Thanks