finicky

Hamstring injuries are finicky, especially for a mobile quarterback, and hurrying back from one is never smart.

Watchdogs also caution that the math to determine whether bioenergy projects sequester or release carbon is complicated and finicky.

It isn't "finicky" like some, can be frozen and revived without trouble, and is unusually good at hosting foreign DNA.

“Electric vehicles are more technical and finicky,” she said.

The capsules themselves can be a little finicky, so if fuss-free is your priority, you may prefer the PAX.