I changed the fuel filter twice since since this problem with bogging down has started.

Someone else had also mentioned to me about checking to see if the return fuel line is blocked. I tried to disconnect the return line where it changes from the steel line to the rubber line (directly above the motor) but I can't seem to get it disconnected. Is there a special tool I would need to disconnect them?

I'll also try to get the car up in the air so I can inspect every inch of the lines under the car.