Fuel sending units

Ya it is hard to be patient with thermal gauges but you have no choice. I saw another thread where there was a Technical service bulletin for 69 Challenger (I think) that talked about bending the pickup tube with the sender on it ( like the aftermarket types) to a steeper angle to correct fuel reading in that car. turns out some of the OEM senders were inches off the floor of the tank and the angle of the sender was off giving incorrect readings and lower than expected fuel capacity.