Проект был в основном одобрен, но и

Проект был в основном одобрен, но инженеру указали на отдельные недостатки, которые можно было легко устранить.

Results (English) 1:

The project was basically OK, but the engineer pointed out some deficiencies that could be easily remedied.

Results (English) 2:

The project was basically approved, but the engineer pointed out some shortcomings, which could be easily remedied.

Results (English) 3:

the project was generally approved, but the engineer pointed out certain deficiencies, which can be easily removed.