My notes were never intended for sharing, and I haven't found the referenced pdf file.
I'm submitting them as is, with nothing else to say until I find a replacement pot myself.
Realtek PCIe GBE Family Controller
CH Products Potentiometer HP100 100K
760-598-2518 or you can email him with your information.
CTS 295 series pot
CH uses 100k potentiometers for their joysticks made by CTS
CTS potentiometers
codes
Linear taper (pot) 1
100k restance 104
3/8" bushing diameter
3/8" bushing length 3
1/4" shaft
7/8" shaft length 7
F shaft type F
V terminal style V
none Switch
Ordering code for 450 model n/g
450 V 3 28 F 104 A 1 A
Ordering code for 450G model n/g
450 T 3 28 F 104 A 1 A
295 T A 28 F 104 A 5 1
(the '5' angle could be a 6 or 7 but only the inside 60 degrees will register)
(the A is for a molded bushing without threads)
It is, or at least was originally, a CTS 295 series pot IIRC
That page is the place to go, pick up the PDF file for the 295s and you can sort a lot of it out. The PDF explains how to generate the part number, I don't see anything that matters that isn't on that list. They all rotate 300 degrees (not 270), the "active area" is under It's a series 295. You can download a PDF data sheet for it from that same page at ctscorp. They explain in that file how the model number defines the pot, the shaft length, type, whether the shaft is flatted or knurled, etc. The say the angle of rotation is 300 degrees for all 295s, that's total shaft rotation, and that the electrical rotation (the active area) has a code that tells what the electrical rotation will be. If you can measure things accurately enough, you can probably figure what the stock options were and pretty much duplicate what the stick is now.
It's the electrical rotation that important. All the 295s turn 300 degrees, but it could only be active for as little as 40 degrees. A 60 degree is one of the options in the part number. The active area, the "60 degrees" is shown under "Taper and Electrical Effective Angle, and 60 degrees is one of those listed.