More letter equations - some easy-peasy, some a bit trickier. As ever, no valiant tries are turned away, even if they don't match my answer

-A. 1 = F. O. the C. N.
-B. 2 = W. that D. M. a R.
-C. 3 = S. and Y. O.
-D. 4 = I. in M.
-E. 5 = B. in the T.
-F. 6 = B. in an O. (in C.)
-G. 10 = E. in a D.
-H. 17 = P. that D. N. and S. V.
-I. 18 = W. on an A. S. T
-J. 40 = A. at which L. B.
-K. 435 = S. in the H. of R.
-L. 451 = F.

A. 1= Flew Over the Cuckoo's Nest

G. 10=Events in a Decathalon

C. 3 strikes and you're out

Hi Rog.

K. 435 seats in the house of representatives

B. 2 = wrongs (that) don't make a right

All absolutely parfait!

E.5=Books in the Torah

F. 6= Bowls in an Over (in Cricket)

Both good!

L. Fahrenheit

D. 4 I's in Mississippi

J. 40 = Age at which Life Begins

H: 17 = Parallel that Divides North and South Vietnam.

I. 18 = Wheels on an Articulated Semi Trailer

An excellent finish, folks!

(I had "American" CCb, 'cos we have all sorts of configurations over here!