You're very welcome Ken
The build in the Doggy I'm vaping right now is 4/5 wraps spaced quite wide, 27 gauge SS, 3mm inside diameter reading 0.39 ohms on my Pico 75 and I'm vaping it at 14.5 watts. My juice is 100% PG and the Muji wick is very saturated. I find Muji vapes almost identical to KGD. If you are vaping high(er) VG juices that may make a difference in the popping compared to my setups.
Hope that helps a bit and best of luck with it all!
To be honest, the only thing that I have not tried (because I didn't think of it, and being too focused on the actual build) is the make-up of the juice. I only vape home-made menthol at 65/35 pg/vg which I always thought was a fairly average mix for most builds. You have at least given me an option for further troubleshooting for which I am grateful, and at the same time, always hoping that a Doggy will give me a better vaping experience too.
Many Thanks to all for your input.