g'day mate,
sorry had a look through the spares box today and I don't have one. I think I had a shite time hooking the throttle up from memory, cause I used a magura throttle assembly and they don't work too well with the standard YZ125f bits. Have you got a throttle assembly/cable ready to go?
As far as the bend is concerned, have you tried the Mikuni distributors, TD Hattricks in Qld, i don't know but they may have some bends that would do the job. Or maybe a bend off another bike? the one that's on the bike at the moment is definately not 90 degrees. More like 60.