You got some nice plants there cheif.
One thing I picked up a few years ago was if you had a minor issue with PM you should try mainlining your plants, it's like FIMing but you tie the new growth down so it grows out sideways. If you get it right you end up with either 2,4,8,16 or 32 main colas and none of the little popcorn buds and cause it's so open and basically growing at a single level plain it's easy to get the airflow through.
Another added bonus all the heads are at the same height so they all get the same amount of light. theres also benefits with each head getting an equal amount of nutrition.
If you want a better explanation let me know and I'll do my best.