I have had my 155 for three days now and I've had a bit of a scare. I was driving through busy traffic stopped at a junction put it into neutral, then I tried to set off again by putting it into gear and couldn't get it in. I was driving it today and it did it again and the gearbox is feeling a little notchy. After looking at somre of the threads on this forum I think it's the gearbox oil. My real question is should I drive it? I have to use my car for work and go to a meeting but can get it seen sometime Monday afternoon.