Injectors quick info problems solving

Talking to Neal Harrison one day with regards to main problems with injectors not working are. Neal said there are two to check first;

Water Only from overflow pipe on the injector

(needs more steam)                    #  1st try a bigger steam cone  OR  Move the steam cone Forward  

Water & Steam from overflow pipe on the injector

(need less steam)                       # 1st  try a smaller steam cone  OR Move the steam cone Back.