The preamble gives 33 unchecked or cross-checking letters in the unclued lights. In the grid I can only see 32: 2 in 14a, 1 in 17a, 5 in 23a, 5 in 27a, 1in 37a, 2 in 38a, 3 in 5d, 5 in 15d, 5 in 19d, 3 in 28d.
Have I miscounted or is there an error byCheeseCracker?