No i didnt lol
I used the above in both the trx4 and trx6 but the 1 that broke was the very short 1 i got from alli express so back to using the stock rearmost shaft in the 6 along with the above shafts
We use these 1,s not had any probs yet mate
https://www.modelsport.co.uk/product/fastrax-trx-4-stainless-steel-front-rear-centre-shaft-long-chassis-425437
Wheelspin have them instock
https://wheelspinmodels.co.uk/i/298292/