Lots of things wrong then, well BVC work great for me, and did so for many years, and my own mix is my personal adjusted 100 times, not like the fixed junk in the ready made bottles that your stuck with.

Never had any problems with tested battries, nobody would say they are 40A, but thats on the label to look for, if they turn out to be 35A so what, better than buying a 35A and its ony 30A?

I use 7.5W !!!! but cool and battries last a hell of a long time

The copy coils worked very good, else I would no use them would I, so do know there are people who wont buy cheap copies, always find faults, I never did, out of 300+ coils perhaps 5 duds