I have no idea if the BT magazine says to let the wire bite in. Regardless, I think it’s a poor technique. JBP produce good bark all on their own. Much faster than white pines. There’s really no need. Especially when overdoing it by accident would permanently scar the tree.
My interpretation of the BT article was more like post #103 than post #117. Although even on #117 I have had luck removing the wire. It may kill the tree, it will definitely scar it (although differently than if the wire remains embdeded), but sometimes the result can be interesting.
In the BT article it says to let the wire bite in slightly on the very first wiring in the second year when the are potted to colanders. The author states that by doing this one that very first wiring it will promote bark to form. I'm guessing this is the tree attempting to heal the slight scaring from the wire.
“Slightly” is a rather vague term, isn’t it? It can mean different things to different people.
You need to decide what you want to produce, try it both ways and see which you like
You are creating to much shade with the long needles above the “shohin” zone. All the little buds you want growing are in the shade, as your leader extends cut those needles short as the next candle extends. You will get the buds down low moving. I start cutting needles the second year and it also keeps weight down on sacrifice leader helping your pot have more stability and won’t rock the plants root system in the small pots we use. I have some 4’ pines in 5”x7” pots Side by side with buds all over the bases
I scarified about 120 in room temp water overnight, 18 hours later most of those sank. All the sinkers (110) were put into a ziplock with a mix of damp perlite, sphagnum moss and crab sand. They sat in a fridge for about 11-12 weeks.
These are my first 12 that were a little smaller than the others because they didn't get the same level of attention / care as my best 32. I keep running out of supplies. I went to my local Lowes and bought all their pond baskets, and have to go to another store tomorrow to get more. I am dying because I know I have at least 40 Anderson flats and 100 pond baskets in California 
What zone are you in? How hot is it? Early spring is the time.
It’s been hot but it looks a bit cooler the next couple o f weeks, I am in the uk, in the north, near Leeds. The needles are just starting to define from the candles.
You might want to let someone more experienced answer but from my research and reading, I feel as though it would be recommended to leave repotting to cooler months, typically early spring. If you absolutely must do it now, I’d leave the roots alone as much as possible. Best of luck my friend.
So here's where I am today. I am just now starting to repot my pines - work that should have been complete a couple of months ago. Additionally I don't have all of my supplies... even most of my wire is still in California, to say nothing of my garbage cans of pumice, etc. So we will see how successful I am going forward, knowing I have to cut some corners
Not having access to colanders, I am going with 10" pond baskets. Worse still, I don't have access to large quantities of inorganic soil mix, so I am going with an organic mix that includes a high percentage of pine bark. Don't try this in a bonsai pot - you will turn your root ball into a brick! But I am hoping I can get away with it for a season in a pond basket.
Scarifying the base of the trunk with wire has yielded tons of low buds. In cases where I can clip off the wire, I have done so. In many of the seedlings the wire is almost completely embedded. I still have 2.5 years now for the second round of growth, and to start developing my branches.
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I thought I had 40 left... guess I have 44
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There you have it dude. @Bonsai Nut is reporting his now and he is in warm California also (I think) so it would appear you’re good to do so.
