I tried for make the heli lighter by removing tail fin + tail decoration + two hollow metal pipes and also the weight placed inside the canopy in order get some xtra flight time but the disadvantage of it which I observed was that it really becomes difficult to land the heli at a desired place.

It gets so light that under the influence of its own air that is pushed downwards, the hover function seems to b nearly lost as it approaches towards the ground.

If u guys go for this mod, flight time increase wud b near about a minute, but at the same u will might face the disadvantage which I have discussed above.