Hi! So I bought the evajoy sand filter pump from amazon. It had 5star reviews and looked easy enough for a total newbie like me. Set up seems simple enough but I can’t for the life of me get the filter tank sealed off! There’s a large O-ring that should fit around top of base or inside lid but it fits in neither place and there is a large circular clamp to hold top and bottom together but it will not connect if the O-ring is put on! I’ve tried every way I know to do it and even got my dad to look at it for me and he says the clamp is too small. I don’t think so I think I’m just not getting the Oring in the correct spot. Any help would be greatly appreciated! 
