Hi
These are the TeamC Blank pistons that most of the team use
http://insidelineracing.co.uk/inside...c-blank-12mm-p
Mostly we are running the following indoors
Rear
3x1.4mm holes
350-450CST
TeamC Medium/Hard Spring
Front
2x1.6 holes
600-700CST
TeamC Hard Spring
Also, as mentioned by brooksy it's worth checking your diff and refilling. 10k is a good place to start
Hope this helps
Kev