Got a response from thrustmaster support, apparently they do in fact sell component level parts for repair purposes. I was not at all expecting this as most companies nowadays would never offer this and instead expect you to ship the item for repairs and pay half its retail price for repair. Here is the email I received:
" Thank you very much for contacting our Thrustmaster support team!
We offer a wide range of spare parts for almost all our products and would be happy to send you the needed spare part.
The needed spare part - HOTAS WARTHOG THROTTLE FRICTION POTENTIOMETER - is available for a price of 6.00€ plus shipping costs for a dispatch from France.
- Standard shipping for 4.56€
However, we must note that the shipping costs may vary, depending on the number of items or the total weight. We can provide you the exact amount at the end of your order.
If you have any questions about the shipping conditions or need additional spare parts, please do not hesitate to ask us. All prices are in EURO (€) and are including the VAT.
As soon as we have received your details, we will start your order process and then send you the information for the payment via PayPal. The prices in this offer can withstand changes at any time and are therefore not binding.
If you would like to confirm the order, we kindly ask you to briefly check or complete your details:"
I decided to order 2 of them in case I ever need to make the repair again. Thrustmaster gets a lot of hate for the construction of their products but I have to give them a massive thumbs up on this one, this is an absolute life saver.