It's been a little while since I have posted on here. Last time I had was right around ZCON right when I started having issues with my car having issue which appeared to be percolation or even vapor lock, which I assumed could be within the engine bay itself. After switching out the NEW mechanical pump for another new one and wrapping up the fuel lines with header tape to prevent percolation, I headed to ZCON where I didn't make it to Bakersfield (from Sacramento) without having the issue again. So I towed it over the grapevine to a true auto part shop that had the parts that I would need in order to get her up and running again. Getting under the car, I found that the PO dropped the tank before at some point and swapped the return and feed lines at the tank, bypassed the electric pump from the tank (bc 260's had them). So that got fixed and I swapped the old, working, electric pump for a new one and got her back on the road. Made it all the way around San Diego without having any issues.... Until we left. This time, I didn't make it to the grapevine and I had to catch a ride with others from the caravan home and get my Z towed home (god bless uship.com for that one). Since she has been home I tried getting her around from time to time and I couldn't kick the issue. So I started to drop the tank bc that would be the last issue within the fuel system that I hadn't touched or even looked at yet. I got the sending unit out, sending and return lines out, fill neck off and the vent line from the drivers side off. I dropped the tank a little bit lower to try and remove the top two lines from the tank, just to see it slip onto my lap bc the PO cut the line near the spare tire, left it hanging, and pulled the line from the front of the tank at the top vent area and proceeded to then wrap the two vent lines with electric tape causing my tank to create a vacuum and wouldn't allow my tank to feed fuel to the lines and into the engine. I will now drop of my tank to the shop on Monday to get it dipped and cleaned out OFFICIALLY and then run new lines from the tank to all the vent areas and hope that THIS SHOULD cure all my fuel delivery issues.