Yeh you can have the hate Chris …🤣
My 2p’s worth, make sure all mating faces on the lips, barrels and centres (pending on how ya mounting them etc) are bare metal, degreased and I key those surfaces with 60/80 grit sandpaper.

Controversially… I don’t mastic the faces… I reckon you can google it ...

This is brilliant news, best news I’ve had ALL year lol. Well done Dave!, welcome back
Isaac