JohnHendry Specsregarding weight on both B4023 KV versions will be listed the same and in reality be very close in weight usually... and listed specs I have are 65 grams for the 1050KV version. The 850KV will need a bigger prop so still a bummer you got wrong KV.

JohnHendry I have two of the original and the square alum internal suport the carbon spar goes into are different in height so because the spar is forward and not in the center when you join the wings the low wing has a much higher angle of attack. It uses a square internal tube so it can fixed using solid 9mm rod and sanding one side down on the top about 1mm and adding 1mm carbon strip on tne bottom sanded to fit so wings have the same height and angle of attack but 9mm solid spar is hard to find.

JohnHendry You can and probably should plug it into a serge protector and they generally have an on/off switch...