some advice or recommendation to fix this weird phenomenon ? i can engage 1-4th gear with no problem but when it comes to the 5th gear , after engaging the gear for a few seconds, the gear will pop out by itself and goes to neutral if i hold it down with my hand on the 5th gear, it can go on w/o problem everytime i let go the gear knob on 5th gear , it goes back to neutral what could have caused this problem? ---------- Post added at 04:10 AM ---------- 6 hour anti-bump limit - Previous post was at 01:53 AM ---------- i've done some reading and research possible reasons i've read are 1.) gear box fluid is low 2.) Shift cable is corroded at the transmission (replace cable bushing if corroded or replace the transmission case housing, 1-2 shift fork, 2nd gear set, 1st gear, and 5th gear.) does that mean my whole gear box has to be replaced? 3.) syncros worn out?