I am also running A048 tyres. They have been great and a good step from what we ran before.
It wasn't clear what the OP ended up doing but in answer to their question, yes it looks like they should be trying to get more heat into the tyres.
Here is what I understand to be generally held target tyre temperatures for racing tyres. It also includes some suggestion of degradation.
| Temp (℃) | Grip Level | Degradation |
| < 60 | Low | Low |
| 65 – 75 | Medium | Low |
| 85 – 90 | High | Medium |
| 90 – 95 | Very High | High |
| > 100 | Medium > Low | Very High |
My own approach has been to use this general guidance as a starting point and then adjust once you've got your own measurements.
I wrote a bit more about
what temperature your race tyres should be on the blog but this is the main point.
Hope it helps others.