I have also spring for slipper (lower diameter than on XXX) that's why I'm asking.
And one more question but this time about using LRP Sphere TC. Looks like shell is touching fan. What should I do with it? So far I used Sphere 2007 and hadn't fan on it. I have seen Darren's XX4, but can't see any mods -
http://www.oople.com/rc/photos/2008n.../OOP_6883.html