I am realizing now the mistakes I made before:
1) right after winter, mistake of watering right away - saw that on my first attempt
2) mistake on the temperature needs - bringing it outdoors right away, when temps are still fluctuating hot/cold even if it was already spring - saw that on 2nd & 3rd attempt
3) too much sun while still a cutting - have to give it some good shade while still a newbie cutting - saw the improvement on this 4th attempt
4) impatience - got to be very patient and avoid watering while no fully formed leaves...
thought I can trick it to form new leaves faster before
I asked a cacti nursery to call me when they have grafted plumies available..they called me two days ago.....not cheap...I think I will stick to this cutting I am trying to root right now before I venture to an expensive plant, and get my basics right.