A beautifully constructed puzzle which probably you and definitely I, will keep looking at.
ε = ABC
δ = DE
γ = FGH
α = JKL
β = MN.P
N 51° 2(A-B).(C+D)(E+H)(G+L) W 000° 3F.(M+N)(J-K)(N+P)
Well done to IceColdUK for the quick solve - I look forward to seeing the other of my recent puzzles that he mentioned being solved! Oh yes almost forgot - have changed the sizing of this one to micro. I was torn between the two sizings. Also have now added attributes as it looks like I didn't when I set it. The wading attribute is more for the mud which may well be on the way to GZ rather than the find although you might find wellies useful (not essential) at GZ.