c/f, with this weight issue i was also considering installing a powerbox + extra rx pack. At present it just has a 5 cell pack and 6 cell ecu pack and Jacco regulator (as this setup + the P120 has come fromt the Hotspot i just sold). Although I was wondering where the hell I was going to put it, could you post a photo of your install? Id be grateful, thx. Nose cone of the Mk11 is already removeable via two bolts in through the front. In general agree with your expo comment as well. I dont run any jet with more than 60% expo, and my Kingcat has none.