1850 rocker breather pipes (Stromberg versions)

[yorkshire_spam]

Anyone have a source for the 3 breather pipes for an 1850 fitted with Strombergs? (Apart from Rimmers)
Part numbers are:
154217
156876
216924

I think 216924 is common with the Stag and maybe some others - a few places I've tried have 1 or maybe 2 of these, but none seem to have all 3.
I noticed when lifting the engine back in the front pipe is badly cracked. (216924)

Cheers, Sam

[yorkshire_spam]

I picked up 216924 from Robsport, arrived today - looks and feels like excellent quality. I wish I could source something similar for the other 2.
Thankfully 216924 (front carb to T piece) was the one in worst condition - so at least that's sorted.