fuel line interior questions, more surprises! Options

[robkammer]

Hey everyone: Moving along on the fuel line upgrade and other related bits. Need some input on how to remove the shifter knob is one. I made a slotted 2x4 block and whacked on it with a small hammer, it didn't move and the block broke. I'm sure it's been off more than once during it's lifetime. How hard can I smack it before I bust something in the linkage? Should I heat it?
And then, the console is in pretty sad shape. I'm pretty good at woodworking and should be able to refresh it. Should I just look for a repro?
Does anyone have a digital template for the pedal board? Mine has some big bites out of it along the top and I can recreate it if I have good lines for what is missing.
And finally, for now at least, to test the voltage gauge, is it more complicated than hooking a known voltage power supply to it?
Cheers!

[NARP74]

For the knob you can try an open end wrench just bigger than the shaft size and a dead blow or heavy hammer. Just keep your face out of the way when it releases. The knob could break if it is really old and brittle. Maybe try some tape around the wrench. I have heard you can pull with a good grip, but it is really hard and again a surprise when it releases.