I have an 05 EX, D17 5-speed manual trans. a few weeks ago it started popping out of 5th gear on deceleration almost every time and sometimes on decel in 3rd gear. So I looked a few things over and saw that the rubber brace in my front motor mount was split. So i replaced the mount a few nights ago to see if it would help the problem, but it still pops out. So now what? Do I possibly need new shifter bushings or is it a transmission problem altogether? opinions please?