I had recently gotten 30000 crystals from one of the crates, and i used them to upgrade some of my turrets, (firebird and Gauss) and my viking hull, my problem is that it was at mk2-3 and i had upgraded it to mk2-10 so that i could upgrade it to mk3-0 when i leveled up to warrant officer 3 (im a warrant officer 2) and i hopped on today and noticed that my gauss is now a mk2-7 instead of mk2-10, my firebird if i remeber correctly was at mk3-5 but is now at mk-3-3, is this a glitch or did tanki change something in game which affected my turret? please respond when possible. and i love the game and have been playing for a few years now. keep up the work guys! My username on the game is Herofire_v13 just in cause you guys need that.