Clearaudio Double Matrix Professional owners - technical question

I've purchased a Double Matrix (manuf. 2011) but there were a couple of minor parts missing which I've ordered together with a new fluid pump (the reason for the sale). However I think there's still one part missing and wanted to confirm something:

Are there 2 springs on the vacuum arm wand assy - one on the bottom and another one in between the lower & upper halves?

Reason for asking is mine only came with the bottom one and nothing in between the upper & bottom halves and someone I was chatting with on FB only has the bottom one and an o-ring in between the top & bottom halves. However, he purchased his second hand as well and it may have arrived that way and perhaps wasn't aware.

Here's a link to the model I have:

https://www.hifitest.de/images/testbilder/big/clearaudio-double-matrix-professional-zubehoer-hifi-11382.jpg

Thanks in advance for any info you might be able to share.

Shawn