I got the death adder about 4 or 5 months ago and until 2 months ago it worked fun. suddenly i have this scroll wheel issue. whenever i scroll up 1/3 of the time it feels like scrolling back down. it get really annoying when scrolling up on a large web page. i usually used a temporary fix of just rapidly moving the scroll wheel up and down for like 30 seconds but now it barely works. should i also see if i can send it in to razer for a replacement?