Found a few links of interest:
https://lab.whitequark.org/notes/2014-02-16/optimizing-for-best-photoresist-adhesion/
More than likely not your brand of resist, but could be food for thought
http://www.frezycnc.eu/pcb-processing-manual/
What I used for dialing in my timing & some stuff I've found on the 'net.
Wow thanks for the great info and their is alot to read and learn..A bit of info on designing PCB's.