Do assisting Tech Teams (page 171) have to be at full strength (1 tech + 6 astechs) to provide the modifier?
If not, I would be right in saying that a single tech (equivalent to 6 casualties so +4 modifier) assisted by three other full techs (so three understrength Tech Teams in effect- giving the full -3 modifier) would have a total modifier to repair etc rolls of +1.
Or would it be better rules-wise to use the assisting techs as astechs to just reduce the Casualty modifier to +2?
This stems from the traditional mech cubicle with accommodations for one pilot and one tech so a Leopard dropship has four techs for the lance and not much room for astechs.