For people who are problems to link KJT on combo (ex : K > S > HS > KJT~KJ FRC...)
You must note that at the begining of the KJT, the KJ is not activable during few frames. If you imput too speed the KJ, he will not out and you will miss the combo.
Just you put a little delay between the KJT and KJ to success the combo.
So the good manipulation is : K > S© (JI) > HS > 421S > Delay (3~4 Frames) > S FRC > ..
An application for a complete combo :
K > S© (JI) > HS > 421S > S FRC > jS > jC > jS > jHS > KJ FRC > jS > jC > jP > jK > jS > jD > Ens