mrteach,
No need to be skeptical of any Brunswick remakes. If it is indeed a remake (actual color, label, name, etc.), we make them exactly to specs as they were made originally, including coverstock material. If a ball is remade several years after it's original introduction (ex: Danger Zone), some bowlers see a lesser reaction than what they were used too back then. This is due to the advancements in oils and lane surfaces. What was possibly the monster of a ball back in its day can now appear as almost a spare ball in some cases when used on todays conditions.
Also, I'm am not aware of any PK18 and PK17 mixtures, but I have only been with Brunswick a little over 3 years and have not heard of any such combination. If I hear differently I will pass that along.
RoB LaW
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I'm gettin' old, I'm hurtin', but I've got Brunswick balls.......Color me competitive.