service.fs errors after SDK switchover

[cartermp]

VS 15.9.3

• git clean -xdf
• build vs debug
• Open VisualFSharp in VS
• open service.fs

There are 75 errors in the file that deal with an accessibility problem. Example:

[cartermp]

cc @brettfo

[cartermp]

The file doesn't appear to be checked w.r.t. its signature.