Hmmm i haven't been in SMOGON long enough to know what a speed tier is =/ would you bee so kind to explain me please?You're not really going to run into any Haxorus anytime soon though. As long as you don't fall below the next speed tier, you should be fine. You can always move EVs from other stats into SpAtk anyway if you're missing some vital KOs on those, but you're not close to any significant speed tier/ physical KO.
Also, i tried moving EVs once but failed miserably...
I'm supposed to use the EV lowering berries and then the medicines right? I did that but i got the "it won't have any effect". (I perfectly remember that the stat i wanted didn't have full EVs so it should have worked)
Thanks for the reply.