What endorsements benefit the tank's jet engine gun in Monday Night Combat?

When using a custom class you can choose various endorsements and I wanted to know which effect the tank's gun. I'm mainly wondering about the rate of fire and critical shot, but a list of those that do or do not would be appreciated.

The rate-of-fire endorsement definitely improves the Tank's Jet Gun. This info comes straight from the developers:

http://www.mondaynightcombat.com/forums/viewtopic.php?f=16&t=979

Rate of Fire Endorsements (Total Recoil, Dr. Trigger, Itchy Finger) affect most weapons. This includes: Sword
Dagger
Jet Gun

You can see this most clearly when playing as the Tank and attacking Bullseye :)

Update: Critical shot also affects the Jet Gun:

http://www.mondaynightcombat.com/forums/viewtopic.php?p=9869#p9869

I thought I mentioned in my initial reply that Rate of Fire does affect Heal/Hurt gun, as well as Sword, Dagger and Jet Gun. Critical Shot affects all those things as well.

(note that he corrected himself later about RoF for the Heal/Hurt gun. This will be fixed in a later patch).