I just installed a new clutch about a 1 week ago everything seemed fine, but today i ran into a problem I couldnt get the car into gear while parked on a uphill. I had to shut the engine off put it into gear and than rev the engine so it would move. The thing is that when it was on a downhill and level ground there was no problem getting into gear. I did a search on the topic but I coulndnt find any info.

Any help would greatly be appreciated.