edit : the mods I use that change the way the chunk are "stored" and my change the way you mod work :
1- infinite storage : http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=1233893175 When unloaded, the infinite storage can deliver huge stack of chunks if you store a lot of them inside
2-Ogre stack : http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=1212016985 I can't remember if it change the stack of chunk, and I'm not sure, but it's a mod made to increase stack size of any object.
3- SS rechearchable stats upgrade : http://gtm.steamproxy.vip/profiles/76561198031148649/myworkshopfiles/?appid=294100&browsefilter=mysubscriptions&p=7 a lot of modification via researchable upgrade : speek of work, amount of meat delivered, stack number

It's all I can see that could modify the mod comportement. Tomorrow, i will try to perform a test with a clean new game and only your mod.

This one : http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=736584444&searchtext=training
I can't go through C# currently (assemblie so), since I don't have any solftwar for that but I can't think about any mod which could touch that.
I made a full research about the two part : butchery or RecipeWorker[...] and your mod is the only occurency. I will perform more test tomorrow and look at every one of the... 100 mods I have ^^ It will take a while.
the weird thing is this can't be linked to a modification of the stoneckunk files since when I do one by one, I have the right amount of stone (20).

what training mod?

anything that effects <workerCounterClass>RecipeWorkerCounter_MakeStoneBlocks</workerCounterClass> or how
<specialProducts>
<li>Butchery</li>
</specialProducts>
works in c# may also cause issues

i think it must be one of these because they are the only things different between specific and any that could cause problems

My mod list is too heavy to be posted, and I have some unrelease mod.
I do some test. When I choose a recipe with "any stone" (10 or 5), I have only 20 stone. But if I choose a recipe with a specific type of stone (marble, granite, etc), it works perfectly fine. So for now I only use precise type of stone.
I made a complete research through the files from all mod and the only other occurences for stonechunk came from the training mod.

i Tested it i got the right numbers give me your mod list maybe there is a incompatability

I don't know why but if I use the cut any block in bulk (the 10 one for exemple), I only have 20 in output :/

Update now requires the correct skill

- Updated to B18
- Do Until X Bug Fixed