I would resist "swapping things around" without troubleshooting first.
There is always the possibility of introducing a new problem when one swaps needlessly and then the real tail chasing begins.
You can always make a tester. I had a homemade one for years and it served me well. A couple of eyebolts threaded into two right angle brackets fastened to a piece of wood, some HT spark lead, a ground alligator clip with short wire and you are set.
Then you can compare spark side to side. One side, you can open the gap up to, say, 1/4" and get a nice spark, then the other side might look weak and yellow or not fire at all. Then, bingo, you are on to something. If both sides look the same, (good) then you can put the ignition system in the good column.
White smoke usually means flooding.