I am now planning to buy a drone kit - A very light weight toy grade types. Know very little on this subject as of now. Before doing that I have a few questions. Can we assume that if there are four motors they can't all be equally strong even if they are from same vendor and same model? If so do receivers detect this inequality and autocorrect? Can this inequality be informed to the receiver by any configuration so that it can deal with it? Is there any receiver capable of doing this? Is it considered ok to add some light weights on the stronger motor ends to help keep the frame stable?
Otherwise do you have any suggestions of what is a good toy grade drone frame kit for 3.7 v coreless motors, with 4.5 cm propellers and a lipo battery.