buy the kit for the T4 that is does not have the C before the CVD like this. "C-CVD" http://www.amainhobbies.com/product_...C-CVD-Kit-SC10

Reason:
they use a retainer ring to capture the pin that holds the pivot assembly together. and are VERY easy to break or strip. A fix for those that already have this type of CVD, take some heat shrink and replace the redor white retainer for heatshrink or if you still have the retainer use the shrink tube on top to hold it in place.

Otherwise just save yourself the hassle and DO NOT buy them to begin with.


go for the regular CVD kit as shown here.
http://www.amainhobbies.com/product_...omplete-Set-T4


But as far as the upgrade to CVD's is concerned......WORTH THE MONEY!! i wouldnt run anything less!!!