Originally Posted by mark2

if there is no clutch slip for sure and you give it loads in first, second ect ect i would say gearbox.
is there any whine when hot or cold or do you here a chatter when cold ect ect and goes when you put the clutch down as the layshaft bearings make a noise when buggered but the synchromesh allows for smooth gear change so if thats going on a gear or gears it gives the fault you describe but without driving it i can only give you the bad news here
mark2