Only adjust the dip switches if you want to change where the crossover frequency is. Use the high and low trim pots to adjust the relative volume of each frequency band. In your case, you’ll need to adjust the trim pots until you like the sound. The original settings in the manual are just starting points…you’ll have to adjust them by ear once the solder jumpers are connected. Since your high frequency content is lower in volume then try turning the high trim pot up (clockwise) 2 or 3 turns. If you need more highs then, thy turning down (counter clockwise) the low trim pot 1.5 or 2 turns. Keep playing around with it until you like what you hear. It’s helpful to keep track of how many turns you adjust each trim pot so you can come back to the original setting for reference.
Good luck.
-Brach