You might not 'like it', but truly,
it really is 'Normal'; it's due to basic physics - I think it was Newton who came up with the First Law of Motion, which IIRC goes something like this:
An object at rest will stay at rest and an object in motion will stay in motion without variation of speed or direction, unless acted upon by an unbalanced force.... So really, it's something you might want to get used to if you like riding motorbikes with Constant Mesh Transmissions...

hyea:
There's a few things you can do to
minimise the clunk as mentioned above, but since basic physics (see above) basically tells us that '
All objects resist changes in their state of motion unless acted upon by an unbalanced force' then that 'clunk' is simply a feature of engaging the '
already in motion' engine side of your Spyder's Constant Mesh Transmission with the '
at rest' part of the driveline because it's in Neutral. But once you've selected & gone into a gear, any gear (
the application/action of an unbalanced force 
) and thereby made both sides of that 'constant mesh' gearbox spin at effectively the same speed, producing a 'clunk' as the whole thing resists the change in motion, it won't/shouldn't clunk again while ever you are moving &/or just shifting up & down thru the gears; at least not until you select Neutral once again (which will eventually stop the output side of the trans from turning any more), &/or stop the motor (which will stop the input side of this equation from turning!) :thumbup:
But due to all that ^^, there's really
NOTHING you can do to get rid of the clunk completely - in fact, if you did, you really should be concerned about what had gone wrong with your gearbox?! :lecturef_smilie:
Hang on, thinking about it a bit more, there
IS something you can do to '
get rid of that clunk completely' - but since it's selling the Spyder, and never buying another
NOR ever buying any other motorbike &/or other vehicle with a constant mesh gearbox like those that so many of these things have, I reckon that if you're anything like the rest of us who enjoy Spyder riding, then that's probably not on the cards!! :dontknow:
Sorry, but them's the breaks! That's just the way the cookie crumbles
and the way selecting First or Reverse gear from Neutral clunks!

pps: