Thank you Clare & Peter, I appreciate your comments.
A JW enthusiast on CN posted a link to a very educational YouTube video explaining how the JWST Flight Dynamics Team calculate and maintain the JWST orbit near L2, and how periodic adjustments are made in order to keep the telescope from wandering off into space.
It looks like placing a spacecraft at the Lagrange points is not as easy or as simple as one would think.
How James Webb Orbits "Nothing"
https://www.youtube.com/watch?v=ybn8-_QV8Tg
Cheers
Dennis