5. then i took a small drill bit (same size as the ink tubes)and by hand carefully twisted the bit in the small hole in the stack . to enlarge it ever so slightly not much was needed . I STRESS THE WORDS CAREFULLY it is just plastic .

 

there is a small crack on the one, that was the first one i did . the other side i did second and is flawless .

thats why i said to be careful in step 5 .

I may have to raid my father's prized pen collection for some suitible 'doners' :tfevil

Here's a pic of the prototype stack mods I did. I used styrene tubes, a styrene putty I made, and foil duct tape.

 

The advantages: 1. I didn't have to modify the figure at all, no drilling or anything. 2: I flared the plugs that go into the existing stacks so that the addons wouldn't fall out even when the entire thing is upside down.

doh, I messed up one of the images by overlapping the one with the separated pieces. Here's a pic showing the upside down arm.

You can go the really expensive way like i did. I took the long stacks off my MP Convoy and put them on my 20th Prime. I did this because i bought a crap load of both of them.