clutch adjustment

[BA0073]

Have a question about clutches and adjustments. This week I replaced the clutch with one that will hold the power better. The clutch that was in the Cobra was out of adjustment (no more adjustment left on the cable) so I said I will replace it. I did as the instruction's told me and the adjustment is in almost the same spot. I have about 1/8 of an inch to adjust, is this normal? I replaced the original clutch with a 75205 super street pro series. The instructions state if you have a cable, adjust the T O Bearing till the T O just starts to touch the fingers on the pressure plate.
I am being told you have to buy a aftermarket adjustable clutch cable (on the firewall adjustment) to do any kind of fine tuning. Will this give me more adjustability. I also do not have any room for the quadrant (1/2 moon shaped part that the cable rolls on). The Cobra is running fine now but looking into the next time I have to adjust the clutch. Any thoughts and info would be appreciated. Thank you