I have a TT chip. My blm is at 130 idle. I'd like to get it at 128 or anyother number at that. I adjust fuel pressure with the regulator and it doesn't budge. I can go as high as 90psi and blm stays at 130. What are causes for this situation? Can I adjust the chip fuel somehow? Bad regulator? My fuel pressure is 43 psi, line off.