I used to own Tipsy Nipper G-CCFE and managed to find an old FS2002 Tipsy Nipper for download which worked on FSX.
The external model really needs a re-paint but it was flyable.
The flight model was Waaaayyy off the real aircraft so I hacked it about a bit until it performed much more like the real thing. I also hacked the panel to make it the same as FE but it could use a tidy.

I'm happy to upload it somewhere if thats of any use ?