Shorty Mirrors Melted

Any fix for shorty mirrors that have melted causing the mirror to slip down inside the chrome casing? Purchased in 2021 for Vespa GTS 300. I went on a hot ride (not summer), spring (October) 2023, Queensland Australia. The mirror is is place, however the melted glue is sticky on the surfaces & likely that the mirrors are not well secured.
Wird hochgeladen: 20240118_191110.jpg …
Wird hochgeladen: 20240118_191124.jpg …

Unfortunately they are horribly made. I had the same problem. In my case the mirrors dropped on the road and were smashed. I ended up replacing them.