5th valve conversion

[cle_tuba]

Hi guys!

I have a B&S 3100WGJ (JBL) and its 5th valve is in the right hand!
I bought the tuba in April and I'm trying to get used to it, but honestly, it's very difficult!
I'm thinking about converting the 5th valve from the left hand to the right hand!
Does anyone know where I can buy the parts to make this adaptation?

thank you very much for your attention!
better