Just got an email from a buddy on the beach in Baja for the winter. He had the intank pump put in his 2nd generation yr 2000+- before he left Washington and had no probs on the 2000mi+ trip down towing. Now that the trailer is unhooked and he's hitting speed bumps faster, he has had trouble with fuel starved type shudder right after hitting a speed bump and then things return to normal after a bit. He says it's not the same as a plugged fuel filter as he has experienced that before. The fear is that something isn't right with the intank pump install. What should he check? What should I take with me next month to help when I join him? Thanks for suggestions. Jim Beck