@ howie ll I follow what you mean!
How about the 530T. Using a inversion of this mod Link:(
530T Modification ) to lower its sensitivity by Changing the resistor value to a lower one , or adding a pot across each resistor.
Quote from 530T Mod "Exceeding 150 ohms when replacing these resistors could lead to failure of the window motor and/or module." So the original resistor was less than 150 ohms.
The last unit Date/Code OK/0K to Present has resistors which are removed to increase its load settings. So it is using bleed resistors. So it can be #2 penciled to lower resistance until it works. This is a power mod used on PC Motherboards and video cards to over volt them. The #2 pencil scrubbed across the top of the resistor adds conductivity lowering resistance ie increasing the bleed off. Or you could attach pots across the resistors also.
Linear taper Potentiometers provide a direct, linear relationship between wiper position and resistance division, so that equal changes in wiper position result in equal changes in resistance.
So a for example a 100k Micro pot which has a lowest resistance of 100R (100 ohms) would lower the resistance to 50 ohms if assuming the stock resistor is a 100 ohms when in parallel. So the adjustment range would be from 99.999 ohms to 50 ohms.
So based on the 530T modification doc. if we assume the original resistor was a 100 ohm and replacing it with a 150 ohm resistor raises the resistance setting a total of 100 ohms to 300 ohms from the max 200 ohms prior to mod. Then reverse modding should lower it a max of 100 ohms, making the adjustment range either 50 ohms or 100 ohms.
Of course these are assumptions based on the original resistors being 100 ohms. Once we know the true value of the originals we can calculate the true value to change.