XK K100 default servo arm position

[k9xxx]

First of all i'd like to say hello to everyone as i'm new to this forum.

This is my first RC helicopter and i have never had any experience with such models.

I'm wondering what should be the correct servo arm position for cyclic roll as mine doesnt look like 90 deg. rather than being uneven. Left is close to neutral but right is pointing down slightly. Is this some kind of factory trim or should i re-adjust it ? (Picture attached)

Another question is if i can charge the battery (3.7v 300mah) with a 5V 1A telephone charger connected via USB with dedicated balancer that comes with the set rather than via one of my PC USB 5V 0.5A ports as stated in the manual. I'm affraid not to "cook" the battery. Maybe you guys have some experience with that ?

[lotaloi]

So, welcome..but where is the pics to see that?