Jetting guidelines for a '95 CR125 at 1000FT??

[MX265]

This is an over asked question, but I thought I would throw it out there anyways as I can find nothing on this model. I am a KX rider with limited experience with CR's (if any) so I am asking for my brothers sake. My brother bought a '95 CR125. He lives at about 1000FT' down here in Georgia. Right around now, it has been running mid 60's to mid 70's. He has installed a FMF Fatty Pipe and a Power Core silencer. He currently has a 55 pilot and 170 main installed with the clip on the 3rd position. The air screw is set at 1 3\4 turns. No known engine mods such as porting. It seems to run OK except for it's a little weak on bottom end power (most 125's are), but this is unusally weak. Raise the clip up one notch and it runs lean. Lower it one notch and it runs rich. Turn the air screw out and it makes little difference. I'm thinking smaller pilot jet, but I just wanted to see if anyone here had some good ballpark settings for this bike.

Thanks,
Andy