How do you change servers? xD I'm sorry I'm new to this.

I recently purchased a Shaft turret. When I started to use the Shaft turret, I realized that the view of the front part, the gun, was blocked by the back part of the turret! I found this annoying and decided to switch back to the regular turret. But the same thing happened with my regular turret! It never did that before! It started when I bought the Shaft turret, please help me! :( P.S. This is not normal. I know because I watched some gameplay videos of Tanki Online on Youtube. It isn't any kind of modification of game settings that I did, either! I enabled all of them one by one just to test. Nothing happened except I fell off of a hill when I was backing up. (Curse you inverted back-up controls! :) )