PSU-Item: B Grinder... on a C-Rank weapon?

[Choja]

When I read the Grinder Base B material, it says "Material for a grinder, used to upgrade weapon damage. Upgrades B and C-Grade weapons."
I'm thinking "Does this increase the grinding chance of a C Rank if I use a B grinder?"
Discuss probablity and if it's the same as using a C grinder on a C weapon instead of a B grinder on a C weapon.

<font size=-1>[ This Message was edited by: Choja on 2006-12-03 11:55 ]</font>

[Randomness]

I doubt it has better effects on C rank weapons...

[Kuya]

From what I've seen through wasting B grinders - if it says "Very High" on a +7 C Grinder on say a 6->7 grind, if you use anything lower than a +7 B grinder, it still shows the same chances (i.e. Very High).