Ok guys we want you to know about an issue with the stretch kit, here is what Scott posted on another forum:
We have noticed two minor issues with the Extension kit.
The M2.5 nyloc nut for the torque tube splines was inadvertently replaced at the factory by an standard M3 nut.
Because the new boom supports require standoffs an M4x30mm bolt was incorrectly specified. The bolt needs to be a M4x25mm. The standoff is correct.
Charley is bringing parts back with him to fix this. In the meantime, please contact ReadyHeli's RMA department if you are confronted with this issue. There is a good chance many extension kits are affected. Our most sincere apologies
Ryan,Team JR, Team Morgan Fuels, Team KDE Direct, RCBearings.com Tech Rep