I got it!
I just had to tap with a little attitude
The dis-assembly and assembly went great I now know that I can do it on the car.
My next question is the hydraulic lifters. I tried to take them out to see how they are in place (I have some new ones in a box) but they stayed in place with just a little play up and down. I turned them with my finger, I even held the back in place just in case this is screwed in but no progress. Do I need to punch them out? I would hope that's not the case
Anyway, is it a good idea to replace them as a preventive?