Had been shifting fine till Saturday, but it is really sticky shifting into neutral. After moving forward and trying to shift to neutral, it won't disengage out of forward. So when the shifter appears to be in neutral position, it is still engaged in forward and pushing forward. I have to monkey with it and eventually it slips into neutral. It's like I have to go past neutral on the reverse side and move it till it slips into neutral. Is this a serious problem?