hi mate,
one thing to watch for when buying spares for these .....
there is a difference in the outer shaft..... there are two versions one has holes for the lower blade holder at a different position to the other outer shaft so be sure to get that shaft for the robbins all other blade assosiated spares fit all the lama type heli from esky.
also the 'extreme blades' are very good and stronger than the black stock ones.
if you find it 'easy' to fly then shorten the flybar  (with the weights on)  by about 10mm each end........this must be exact mind or it will upset the heli instead of making it more reactive

regards
don