With Jeff in the group, it is possible he will repair broken items from the inventory when the group rests somewhere such as hotels among other places in the game that allow this.
In order for an item to be fixed, Jeff's IQ must be greater than or equal to the amount listed. However, it should be noted that this does not necessarily guarantee Jeff will fix the item and could require more than one rest before he actually does it.
|Broken Item||Fixed Item||IQ Needed|
|Broken Machine||Counter PSI Unit||1|
|Broken Spray||Defense Spray||1|
|Broken Iron||Slime Generator||10|
|Broken Air Gun||Magnum Air Gun||12|
|Broken Laser||Laser Beam||24|
|Broken Water Pipe||Shield Killer||30|
|Broken Cannon||Spectrum Beam||32|
|Broken Gadget||Double Beam||34|
|Broken Tube||Hungry HP Sucker||36|
|Broken Trumpet||Defense Shower||40|
|Broken Bazooka||Heavy Bazooka||45|
|Broken Harmonica||Baddest Beam||55|
|Broken Antenna||Gaia Beam||65|