Enrage Meter

When running a Kelleran Beq team in the Naboo Raid the Enrage meter jumps to full in last wave even though I finished the previous wave less than 100%. I did two attempts. One I finished the penultimate wave with 97% Enrage and the other with 98% Enrage. Both times in the final wave the Enrage meter was full, but the shield was still up. The droids became more tanks and hit harder and I was not able to full clear.