Signature points before: 260/380
Level 10 Cap: 140 normal (210 nerf)
Old Ace Serve: 4 x 20 damage (80 points) = 80 points (3TCD)
Changes - Spending 40 points for 10 extra damage per hit.
New Ace Serve: 4 x 30 damage (120 points) = 120 points (4TCD)
Signature points after: 300/380