I still use my Warthog throttle. I did the deltasim mod for it a couple of years ago. The original eraser thumbstick was useless. Had a heck of a time with the Deltasim mod for a while though. Every now and then it would lose calibration and nothing I could do would get it working again short of putting the original mini stick back in, calibrating, then replacing it with the deltasim mod. Then I could calibrate it again. The guy who made it had no clue. May have had something to do with fact I get frequent, often buggy, updates from the Windows Insider program. I finally figured out that something was causing the windows registry settings for the stick to have settings which made it inoperable. I changed the permissions on the key so that it cannot be overwritten and have had no more problems.
Here's the key if you run into this: Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_044F&PID_0404
BTW, I tried the Chinese knock off mod first because it was cheaper. My advice, don't.