I recently purchased 2 of these shower heads for the master bath. My shower has 2 heads located on opposite walls. with one of both of them on, i can see and feel a difference between the 2 heads even though they are the exact same head. on the 1 with it set for 1.85 gph, it feels great just as described, with the other i have it on 2.5 gph and it still feels weaker than the other with the low setting. it also is the same wheather the other head is on or not, it just doesn't feel right. is it possible that one of the heads is defective? if they both felt the same as the first one, it would be great. Any suggestions?