Hi Guys,
Thank you for your replies. Lots for me to take away. Spent a good hour in my local bike shop last night, with one of the techs. Wheel all good, so counts that one out, tape removed. usual clean down and inspection of the tyre and wheel. New inner tube installed and gone up to 120 psi. Talked through my tyre/tube changing technique also just to make sure I'm doing it right, a few tweaks and hopefully I will see end of this bad run.
I like the Gators, good ride on them, but they are tight to put on, my fibre glass levers wont do the job, snapped two, so metal levers for the job.