What leg do I have to stand on here??

Back story,

I bought this French control tyre brand new and used it for 4 sessions at WP. Very non abrasive track as most would know. Slow times not blistering ones.

Hardly any wear in the front (new as well)
Dunlop reckons it may happen when the tyre is towards its end of the life cycle. However this tyre being brand new only having done 45 laps. Glenn Allerton had a look and reckons it's defective and advised me against riding on it further and sending it back to Dunlop.

Having done that, Dunlop are playing hardball and I'm wondering what to do in regards to this. Im still trying to push for a replacement tyre but am I asking too much??

I understand not having warranties against slicks but surely there is something for manufacturing fault. Clearly it's not a geometry tear or an old tyre (hard to tell but they were brand new and done about 45 or so laps )

Anyone??