OK, I purchased 2 Street Elbows and 2 regular 90 degree elbows (only difference is mine are schedule 80 (gray)), and mine wont fit in the overflow box. are the schedule 80 fitting bigger??? i know they have a thicker wall but i though outside dimension is same as your schedule 40 (white ones), I think we have same overflow box (3 ports, 1200 gph). no matter what I do, I cant get them to fit, I cant rotate it enough to get the next one in the hole next to it, or even the emergency pipe in last hole, please help???Found what I was looking for at another homedepot on the other side of town. 2 90 degree street fittings and 2 regular 90s and boom.