Serpentine timing chain cover removal question

[IainGriff]

Changing the cam on my 500, I have removed timing chain cover bolts (9 off) and two front sump bolts, managed to loosen the cover (mainly at the top), however there seems to be resistance to releasing and removing it completely, have I missed a trick, nothing in the Disco engine manual. I wondered whether it's just stuck on dowels or jointing compound? don't want to bludgeon it with a mallet in case I'm damaging something, can anyone advise please?

[IainGriff]

I'll check tomorrow but fairly sure I have all the bolts out, as you suggest, I'll loosen off some sump bolts and try again
Thanks for your help guys.
Iain