Estoril wheel TVR badges

[eng622]

Anyone replaced these and know how to get the old ones off? I had two that had been replaced by slightly smaller ones and managed to prise them off but the other two are original and I cannot see any way of removing them without damaging the plastic.
Now I bought new badges off ebay and for now settled on replacing just the two. What a joke that has turned out to be. The badges purchased are as good as useless as they have a slight bow across the surface (outward facing) so when you try to fix them (self adhesive backing) they just rock as the glue is so poor that it will not hold them down flush. I guess very few glues would, so I have cleaned off the glue with thinners and intend to stick them on a bed of clear exterior grade sealant (not silicon)

[V8 GRF]

What about putting them in a warm oven to get them soft and then pressing them down on a flat surface and setting them with cold water? Might work...