Dismantle a Q85?

[Geebee]

I am trying to open up my Q85, I have removed the 3 counter sunk screw, fitted 3 longer ones and tried to rotate it counter clock wise with a decent lever and can't budge the cover, I ended up fitting some higher tensile screws as the first set bent in that attempt, and even they are starting to bend.
Any thing I am missing?

 

[trex]

try heating the lid with a hot air gun near the rim.

 

[Deleted member 4366]

See what I wrote in Cwah's Q100 thread today.

 

[Geebee]

Cheers, heat made all the difference.