If a ship has R4-B11 assigned:
and is attacking a target with a strain or tractor token, that ship will roll one fewer defense dice. If R4-B11's ability is used to remove that token (and there are no other strain/tractor tokens on the ship), that ship does not get to add another die to its defense pool, correct? The effect of the token is applied when the dice are first rolled, and not reevaluated afterwards.