Setup: 2-15" type rs. Audiopipe ap30001d. Deadened doors back wall and ceiling. Custom ported box tuned to 30 hz. 1995 ford ranger ext cab. 250 amp alt with dual batteries all 0 guage.
Problem: my roof is flexing like a mofo. It literally flexes about an inch or so. Sounds like someones on top of my truck shaking a big piece of sheet metal. I have tried deadener, no go. I have foamed my roof supports back to the sheet metal again too. Now the whole.roof including the supports flexes lol. Id rather not weld or screw into the body. Don't want to mess up exterior paint. any suggestions?