проект был в основном одобрен, но и

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

Результаты (английский) 1:

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

Результаты (английский) 2:

the project was basically approved, but the engineer pointed out some shortcomings, which can be easily eliminated

Результаты (английский) 3:

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