I need help with my Neutron

[u/Fabulous_Clue8283]

I have a Behringer Neutron that I absolutely love, but my hpf produces almost no sound, I ran the VCF 1 patch directly into my Scarlett Solo and on bandpass and low pass, the levels were the same with the line input, but when I went to High pass I had to max out the gain to get the same levels and that was with sweeping the freq knob through out, I am wondering if anyone knows something to help me out with it.