I built a pull-up bar in my backyard with 1inch galvanized steel pipe. Four - 5 feet long - 1 inch pipe with connector to make it to two 10 feet bar. One - 7 feet long - this is horizontal. - Used 90 degree elbow to connect the two 10 feet long bar to this one. I cemented the legs and left it to dry for 2 days. it stood firm when I moved it a bit. I tried to swing on the bar today and i see it is wiggles near the connectors on the legs. How can I salvage this? I need to be firm for my exercise routines and am planning to add a swing hammock to it. Picture of the set up is attached. Please help.