@52anddone Did you get the FeV 3 from fasttech?
If so open a support ticket and tell them the package came missing the pin. Attach a photo of the base (clean/not with build) showing the pin missing and they should ship you a replacement base.
Go to your Order History, click the Support button on that order and then Items defective or damaged (DOA) and request a replacement base. Attach a photo and you should be good to go.
My pin came out quite a while back. I put a little bit of JB Weld in the hole and pressed it back in.
Yeah, it was a FT order. I wish I had waited till I read your post before I started fixing it myself
I get annoyed by how the tank wants to raise off the base a tad on all versions.. It's becuse the oring retaining cuts are slightly wide. If you fill the gap it keeps the orings from being able to slide up a bit and keeps the tank down tight.
I think I have that covered, I think. I've ordered some 18x1.2mm o-rings in hopes of taking up that slop you talk about, and which I noticed on my V4. I took some dental floss and did 1 wrap around the bottoms of both o-rings and that seemed to help a lot, so I ordered the o-rings (I read the fix for that on FT forums for the V3), the 18x1.2mm that was said to fix the V3 should work on the V4 as I can use the V3 upper tank assembly on the V4 510 base and fits perfectly.
My OCD kept me from using the FeV 3 pinless...![]()
Yeah, me too. It just bugs the heck out of me to look down and see a "HOLE" and not a pin.

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