Major is way to late, to have any combat value. It is a light vehicle after all that gets beaten by a Luchs atm. It needs to be adjusted in performance and put in the same timing as Stuart and AA HT. So put it in HQ and unlock it by double officer or officer + appropiate officer tech.
Edit: Sorry man, after reading again I do think I got you wrong. Tech request same as Major seems to be the exact same thing I proposed here XD
Yeah,Major tech request LT+CP or T2/T3 upgrade,my English too bad,thanks for reading