Cannot always gain a trick

Cannot always gain a trick

Q J 7 6 5
A K 6 5
5 4
5 4
N
W   E
 
S
A K 8 4 3
4 3
A K 6 3
3 2

Contract:

4 by South

Lead:

K

West starts with two high clubs, but misreads partner's signals and leads another club. How do we take advantage?