The city wants your help identifying problems. But sometimes that isn’t enough. As people are poised to swarm the 109 city parks this spring and summer, spot checks by the Post-Dispatch found broken fixtures, trash and other issues that point to neglect. Forest Park, the crown jewel of the parks system, has a $115 million endowment to keep it up to snuff. In the north and south, grittier realities are at play.