Just a small amendment about the amount of trapped fuel in the forward tanks.
L3's, from SN 51244 and onward and all L4's have had the flight manual changed so that the amount of trapped fuel in the forward tanks is about 85 pounds. It was a misprint in the original flight manual which has now been corrected. Don't ask me why it took so long to correct it.
51244 was when the transfer pipe from aft to forward tanks was shortened.
One other major piece of information that is very important: Turn off the fuel valve or pull out the left boost pump circuit breaker or you will drain the battery, even with the battery turned off. The left boost pump is wired hot to the battery.