CMP manufactures two jet internal and body systems, Pro-Loc & Typhoon Advanced These two systems are not interchangeable. Never try to force a jet to fit if you are unsure of the fit
Typhoon Advanced System
Black or Gray Snap-Clip Ring in Jet Body (Except 200 Series)
NOO-ring on Jet Internal Shaft (It is possible the o-ring could be broken or removed. Always check other indicators to confirm.)