[A8]

Is the battery wires near the antenna problems?

[Mateusz]

When there is something wrong with your settings, safety checks prevent arming. Setting always armed  is bypassing safety checks. You should revert back to not using "always armed" and fix problems that prevent from arming. These safety checks are there for a reason. Check your system health are all fields always green ?

[A8]

Is the battery wires near the antenna problems?

?

[f5soh]

Is the battery wires near the antenna problems?

No

Did you mount the propellers with the marking facing up ?

[TheOtherCliff]

Some confusion. 

Attitude mode is the most common "auto level" mode.
Props MUST be balanced or it can cause it to go crazy.
Without running a GPS, it will always drift, at least to blow down wind and a little random on top of that.  That is the best you can hope for.  Like a car, you must constantly correct it to keep it on the road.
You must have it flying well before adding a GPS.
Your new quad is like a car that is built, but front end is not yet factory aligned.  You must adjust Attitude -> RotateVirtual to align it to minimize the drift.  Search forum for "rotate virtual". 

[A8]

Is the battery wires near the antenna problems?

No

Did you mount the propellers with the marking facing up ?

Yes propellers marking facing up .
The build quality is very effective Prop and balance in flight.
Now I us DALPROP 3blad T3045

[A8]

This is my Quad 

[A8]

Suggest Balancing propeller 3 inches? 

[A8]

Who does not comment on balancing the motor and propeller?

[TheOtherCliff]

Get a magnetic (suspension) balancer.  Be aware that even the balancers are a little out of balance.  I balance, and then rotate prop on balancer shaft about 180 degrees and make sure it is still balanced.  "Split the difference" so that it thinks one blade is a tiny bit heavier, then you rotate and it thinks the other is a tiny big heavier.  That is the best you can do.

Is that what you were asking about? 

[A8]

What to us other Flight mode by other channels in radio? 

My Flight mode switch is 3position but I need 5positions.

I need set return to base by a channel.

[TheOtherCliff]

Most modern radios allow you to set up multiple switches to a single channel.  That is the official way to do it.
Another way is with a knob instead of a switch.
There are also some switch kits for some transmitters, to add a rotary switch that has many positions.

Be careful if you do the following, there is a delay with turning on a transmitter and probably some switch position safeguards in the transmitter setup:  Add an FMS position:  Then configure RC failsafe to move the FMS position farther than you can with the actual switch, then just turn off the transmitter.  You can also set FC failsafe to FMS position for RTB that is not reachable with transmitter on and switch transmitter off.

[A8]

Most modern radios allow you to set up multiple switches to a single channel.  That is the official way to do it.
...

It not good more than 3 position on one switch!!!

I need other flight mode by any channel and switch example auto landing crocus lock home lock & ...

[TheOtherCliff]

Some modern radios allow you to "combine" a 2 position switch and a 3 position switch to get the effect of a 6 position switch.

[A8]

Some modern radios allow you to "combine" a 2 position switch and a 3 position switch to get the effect of a 6 position switch.

What not to set up other channel for other flight modes ?

What other channels on the controller used?

Is this a weak software?