I've noticed that the circular metal pins (sorry I'm a beginner, not sure what they are called) in my pick ups aren't all flat and level. Some are a few centimeters out of the pick ups and some are sinking inside them. Is this normal?

Quote by West Riding
Exactly like that yes

That is called staggered poles. lots of strat/single coil pickups are like that.
2002 PRS CE22
2013 G&L ASAT Deluxe
2009 Epiphone G-400 (SH-4)
Marshall JCM2000 DSL100
Krank 1980 Jr 20watt
Krank Rev 4x12 (eminence V12)
GFS Greenie/Digitech Bad Monkey
Morley Bad Horsie 2
MXR Smart Gate