I added the fan what do u mean yours is really modified
Started with the base model 9200
added the fan kit, painted the bottom inside with latex paint for better sealing of the pores(easier to clean and disinfect)((has to be repainted about every 3 hatches)), wired in a STC 1000 temp controller, added the automatic egg turner which isn't really a mod. That's all I recall off hand.
I will eventually build a larger cabinet style out of a display fridge I picked up off craigslist and this will turn into a hatching unit.