Hi again, sorry for late replies, been a bit busy with my AA and DAA recovery, yep...not just the cigarettes I've been giving up

I do ofc use a great calculator, so helpful. Think I am on my 4th batch of 100ml, and yes I do know that it's good to make small test batches but I have a limited number of concentrates so just hit and miss, thankfully most been hit. The most recent is 11% canteloupe, 3% cranberry with 1% koolada. I have asthma so want a vapwe that isn't going to affect me, like I found some store bought vapes did, which led me to sites talking about diketones. Now maybe the levels are not high enough to cause worry, but well...if I can choose not to have throat irritants or have them, I choose not, hence my selection is all TFA and diketone free...cranberry, canteloupe, mango, papaya, citrus and koolada to add a touch of freshness.
I use a 72mg PG nicotine, which when I put in 4.2ml it says i then have the 3mg/100ml level I want, which I believe is 3%. I also noticed in my vaping that I got itchy eyes and ears lol Read a lot and seems that some people can have PG or even VG allergies, and as I was originally doing a 50/50 it was hard to tell which it coudl be as my vaping seemed the only logical thing that caused this. Now using 80vg/20pg and has helped a lot
The final great thing is that my self made coils are clean, yes, clean lol No gunky black all over them and even after 2 weeks the cotton bacon is white
So as one reply said, yes, the DIY and coil building are the hobbies for me, and with practice will get the flavours right...might increase the % based on what smoke_too_much said
Thanks again for welcome, will read the links later when get time
Anthony