"He who marches out of step hears another drum." ~ Ken Kesey
I used two different films maybe thats it I dont know tomorrow is another day. This the the third +3 color job on the new press so I am still finding my groove on dialing the jobs in. Its good though heck if it always worked the first time I would have learned nothing right? Its not a paying job just a weekend project so no biggie. Some days just suck or all the crown and coke caught up with me.
The first thing I'd check is the films. Do they line up perfectly? If not, you are fighting a battle that you can't win.
Also we have gone to putting very little authority in our reg marks. We start with a film on the platten, tape it down, register the screen to it then add the second film over the first and register the screen to it and so on using the marks as initial reference but using the image to image as the primary authority. We keep the films as placed on the pallet untill the job id all registered just in case we need to go back and check the bread crum trail of how we got to where we are.We find reastically this takes about 10 minutes on the high side per color using the clear tape over first color method. If we are exhausting more time than that there are mechanical issues in the films, screens press etc and refocus from there.