hello sirs.. i hve here toyota corolla 96 mdl, manual tran.. the problem is is sometimes nagsstock ung gear especially when long driving. sometimes i hve to pull over. i have to step on the clutch many times. pero sometimes matgal bgo pumasok ung gear kpplit ko lang ng hydraulic kit at kpplit ng gear oil. pero still the same result. what seems to be the problem??