Textured Tony Hawk Halfpipe

This is the textured version of a previous project, based on the structure of Tony Hawk's personal halfpipe and using artwork from various sources as graffiti. If anyone can provide some suggestions to fix the UV issues that are present here, they would be appreciated. I couldn't find solutions anywhere online, and honestly, I don't know what's going on. I tried to reapply texture to the same spots multiple times and the file only seemed to get worse as time went on. I use Maya, and only got blue jagged lines when I tried to add textures in many areas. Thanks for the help adn the views, Emily