If I interpreted the @MTH RD response in this thread properly, the new "beefed up" cradles are not going to be sold separately.
It sounds like the design changed such that the new thumb wheel assembly can be used in either new or old remotes (minor wiring instructional addendum included in order to use it with old remotes - wire order is different).
While the assembly is backwards compatible, it sounds like there were design changes that would not let you use the new cradle with the old thumb wheel.
-Dave
