Nice to know Im not the only one then

readjusted the antibacklash nut alignment and its much better now, so it seems perseverance is key. Spent ages the other nite trying to work out why it was binding, next day I spotted the problem in 5 mins.

Thanks again for all the advice. Its ok reading from a book or off the net, but being able to ask specific questions when you get stuck is brilliant. Definetly wouldnt have got this far on my own.......