As the others have implied, remember that these balls are complementary. They are not intended to work on the same oil pattern. There might be, should be a very small overlap, but for the most part when the lanes are dry enough (medium-light to medium oil) for the original Inferno), they are too dry for the Strike Zone. When there's enough oil for the Strike Zone (medium+ to medium-heavy oil), the OI will skid 55+ feet and be ineffective. There are your keys for one versus the other.
I would not alter the cover of the Strike Zone, unless you already have another ball for that condition or you have your own spinenr and can change surfaces easily and quickly. If your OI is wearing out, replace it with an Absolute or another equivalent ball.
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Bowling: Wish I could help me as much as I seem to help others ...
Life ... is what you make of it. No, really!