Kind of a click is considered optimal.
For a while the disks/brass rivets were insufficiently "cupped" to hold the three fingers of the switch. These are the disks/switch which as you turn the wheel in steering tended to carry the switch along with the wheel.
These reproduction switches didn't last too long. I would say by the mid 90's market dissatisfaction was relayed, and the producers quickly provided plates/brass rivets/wiring harnesses with more of a depression on them.
You want to check your "fingers." This being the brass circle in your switch which circular "pressings" made to match into the brass rivets. The brass circle can be "bent" a small amount between attachments to make the pressings more proud and press closer to the rivets.
This would be for the "three contact" switches of the Twolite system. The "four contact" switches (type H) are not reproduced either switch or plate, and the circular pressings/fingers are supported by only one side and are hence less "adjustable." But the four contact switch/plate has nice "depressions" in the plastic which tend to hold the switch in the selected position.
Comparing the two switch designs...
Be sure of your assembly. There is a spring above the "spyder" which keeps pressure on the switch bulb and keeps the handle from moving around.
Joe K