Juggernaut,
BTM changed their oil patterns recently. So some balls, like the lowline Ebonite balls (Bash, CLash, Boom, SMash), are now rated as dry lanes balls, whereas before they were rated as medium oil balls.
I believe the same situation is true for the new and the old Razyr. According to Hammer, the coverstock is the same, just the colors have changed, to sell more balls, I suppose.
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"None are so blind as those who will not see."