Newest UM S5 sliding rail blocks. Black or white?

[axislab 8]

From searching, I see the original sliding rod blocks for the S5 were white, and those were prone to cracking. A short time later Ultimaker revised the blocks to a stronger black version.

I just ordered a couple sets from Dynamism and they are White with the belt installed. Advertised as "brand new" (I Ordered replacements due to the rod falling loose.)

 

I emailed and they told me the newest revision is white again. 

Is this true? or did they send me old stock known to be prone to failures?

 

Thanks in advance

[SandervG 1,519]

Hi @axislab, thank you for your post. It is true. Your research is also correct, we started out with white slider blocks, but then replaced them by black ones. But we managed to get fix what was wrong with the first white ones, and now the latest slider blocks are white again 🙂

[axislab 8]

Perfect. Thanks for the confirmation @SandervG. Good to know 👍