I actually don't know if its a bug or I'm doing something wrong.
Using MineTweaker3-1.7.10-3.0.10B.jar

When removing boltparts like:
mods.tconstruct.Casting.removeTableRecipe(TConstruct:BoltPart:134.withTag({DualMat: {Material2: 185}}));
mods.tconstruct.Casting.removeTableRecipe(TConstruct:BoltPart:135.withTag({DualMat: {Material2: 185}}));

The system says No recipe found for output ... , material <> and cast <>. command ignored!

And then if I type /minetweaker tconstruct , the log contains all unreadable characters.
Also none of the casting recipes works any more.

The remove command works for any recipe other than BoltPart.