Night Shots w.Belair

So the auto-exposure doesn't work so well on my Belair :( About halfway through the roll I realized that the exposure of the camera was not adequate for the lighting (based on calculation from my Pentax digital lightmeter). I switched to 'B' mode for the rest of the roll and the exposures were perfect base on my calculation. I will have to investigate this matter because it seems the auto-exposure is not accurate for low-light!!!! (more info to come).