While swapping spools and getting a clean feed into the extruder I dropped the tensioner screw with the spring and the washer and the spring has gone bye-bye.
Anyone know the size + rate of the stock spring so I can try to source one at Ace?
thx
Have you checked out the ACE wiki?
Looking at it right now but I have yet to find any information quite so low-level.
I was hopeful the assembly instructions might have it in the parts list but, alas, no. From memory, I believe the extruder may have come pretty much pre-assembled.
Ah!
I will just order that and measure the spring when it gets here, I guess.
Otherwise, you can ask Sovol at info@sovol3d.com
If you have a MAX, you should be looking at MAX or ZERO parts, not the SV06’s.
I found another one for a couple of bucks cheaper by first finding more information about the extruder used in this model. That other one is specifically listed as for SV08 (MAX).
I was able to find one that was close at the local Ace Hardware and then cut it down. While I was putting the shield back on the old spring fell out. It had somehow fallen into the shroud. lol
I guess I have an emergency spare (or two) now. 
Where in the world did you find the CAD files??!
3D .Step files only. I took the spring to a separate workspace and made the drawing so I could dimension it.
I still haven’t figured out the encoding on part names. The Chinese comes thru as Unicode jibberish.