Probably a stupid question with a very obvious answer, but here we go.
I’m trying to remove my wonderful 
401 from it’s plinth.
I’ve removed the nuts from the 4 mounting bolts and the unit is still firmly stuck in the plinth; won’t budge a millimetre !
What have I missed ?
Glue?
Wouldn’t surprise me Jim !
Have you tried turning it upside down and given it a good shake?
Thought not 
Not yet, but given enough time and a couple more 
…
Seriously could there be a strip of rubber insulated between the two? If so this can really stick over time. Gentle heat with a hair dryer might help.
Don’t tempt me !
Nice plinthed 401, OL Silver, AT33PGII - £650 anyone ?
Rubber washers stuck?
Early mid or late production?
Yes
I’m only trying to extricate it so that you can look at it.
It’s been nought but hassle since I got it 
This is becoming the best sales pitch ever 
It’s supposed to be on its way to Matt, but …
At first glance that looks like @J_B’s cartridge fettling hammer, but there doesn’t appear to be enough rust from the salty tears of frustration and angst. Perhaps he polished it before he headed off on his jollies…
Confused by confusing editing confuse.
Relax dude. It’ll all be ok. Have a drink and let it all wash past you…
Nah. Off to work soon 
Nice.