This doff is supposed to give a 40% chance of an extra generator to an engineer when they lay another: shield gen has 40% chance for a medical gen, and a medical gen a 40% of a shield gen. Med gen + shield gen is a great combination.
I have put down a large number of medical generators in the sphere battle ground and not got any shield gens, something is wrong. This is with a rom embassy fabrication kit mk 12 laying medical generators level 3. Is this my fault or a bug?
Doff was I think about 4m on the exchange and the additional doff slot 150K fleet credits, so am a little peeved by this.