Good deal Eldorado!
Ive honestly never measured the current across this resistor so i can't say for sure what is needed there.
everyone just uses 2 or 3 watt resistors there instead of measuring lol.
if you are concerned or the 1/4 watt resistor is getting hot when in TX, then you can parallel some other 1/4 watt resistors together in order to make a 1/2, 3/4, or 1 watt resistor etc.
four 150 ohm 1/4 watt resistors will give you around 37 ohms and will handle 1 watt.
there is no difference on the scope or in performance between the "add a fixed resistor to the bottom of the board" and the "use a tIP120 and a pot to provide a variable deadkey" versions of the mod.
I like to use the TIP120 method and mount a trimmer resistor inside the radio.
that way it can be set for wherever you want it but you don't have to worry about accidentally moving it by turning the wrong knob on the front of the radio.
LC