Upgrades and Fine-Tuning

It is, in fact, possible to install another Ability to an already existing and functioning Gadget at some time after creation. Resolve such an attempt through all the Making a Gadget steps, as though the new parts of the Gadget were a new Gadget with ONLY the previously-existing settings for Reliability Number and Take Away -- but add + 2 Column Shifts to the OV and RV of the Gadgetry Skill Check, because the gadgeteer is adding an Ability to the Gadget for which it was not initially designed.

Do not figure out the cost all over again of attributes and so forth. That is way too much.