Can't get my Weber grill to cook quickly, Low flame

Sorry I didn't have pics available. I have attached them below. Now I hope this works! As I stated, all the connections are exactly the same as the connection on the top of the 1 lb bottle. I tried to take a picture of the line but it is too dark. The connection is near the front of the trailer, right off the main line coming from the bottles. The connector on the trailer is just like the top of a bottle (1 lb portable like from Coleman) and the hose end with the little protrusion goes into the connector. Same where the two hoses connect.