thanks for the link, i followed it and have re-fitted the box to the car over the weekend. I'm pretty sure that i could cycle through the gears with it sat on the bench , but it now seems to struggle to engage all gears whilst cycling through the gears using the shift tower only.
The box has not been filled with oil again & the slave cylinder is not re-attached, could either of these two be the reason for the notchyness.