Fixed it. Stripped down the selector mechanism but couldn't fault it. I put it all back together and got really pissed off with it, and booted the gear lever very hard and it went into 1st. It was hard coming out of 1st, but after that worked fine. Took it for a drive with no problems......WIERD. Maybe the selector folk had come out of the selectors?????

Was going to get it towed in the morning and pull the box out.

SC TER