On 24/04/2014 12:57, Bill Wright wrote:
Sometimes (about every third time) there is considerable resistance on
the gear lever when I try to engage first. If I cautiously let the
clutch out there is eventually the sound of clashing gear wheels, then
the lever moves into gear easily. Does anyone know what the trouble is?

Bill

When moving or stationary?

I'm assuming stationary.
If not going in first time, put stick back into neutral, lift clutch up
to spin layshaft, then depress clutch and try engaging first again.

Not that uncommon. I can't recommend grinding the gears too often!