Playing current (20171012) ver of FTB Beyond 1.10
MCP 9.19
FML 8.0.99.99
Forge 12.18.3.2422
AA 1.10.2-r105
JEI 3.14.7.419
InvTweaks 1.61-58-a1fd884

Normal operation: (Not sure which mod does this, Inventory Tweaks perhaps?)

• Using Ctrl+Click on a vanilla inventory will transfer 1 item from a stack to/from the player's inventory.
• Ctrl+LeftClick drops the 1 item on an existing stack in the destination inventory.
• Ctrl+RightClick creates a new stack for each 1 item transferred.
• If Ctrl+Clicking with no GUI open, it will transfer 1 item between the hotbar and the player's main inventory.

Ctrl+Clicking with an AA machine GUI open (tested with Farmer, Canola Press and Coal Gen) results in JEI's spawn item functionality being triggered (even though spawn mode is currently disabled).

• A Ctrl+RightClick spawns a single item.
• A Crtl+LeftClick spawns the difference between the partial stack being clicked, and the max stack size.
  Tested with coal and canola.

Cheers!

Closing this because I found a way to do it w/o AA.