Any idea?

[InkedMuttley]

If its a depo they come apart with a hot hair dryer. If its a valeo, you need a hot air gun or put it in the oven. Don't expect it to come apart easy or for it to be tidy when it goes back together!

It is a Valeo one I've had a hot air gun on it to no avail, I aint too bothered about it going back together tidy as I'm going to be fibre glassing the headlight itself anyway, have an intake tube ready to put in not too sure really as a mate has a few carbon off-cuts so may just use that instead but need the actual headlight back to hold together so I don't need to re-mould the whole damn thing!