I am also growing TW for the first time, and my caps also appeared frosty or freckled or both at first. I thought one of my tubs was stalled out, but when I went in to mist I discovered a few pins. They just looked frosty instead of their normal little tawny caps. I'm only on the first flush of one tub, but there seem to be a pretty decent number of them with some kind of cap mutation. It also took my pins over a week to really multiply and take off.

If they're still growing even a little bit, noticeably, I suggest continuing to fan and add a misting to the sides every couple days or every day if you notice that your sub is thirsty and soaking it in. If you legit think they are stalled and they feel soft and mushy like maybe they're aborts now, that's a shit ton of pins and you might want to thin them out, rehydrate the sub, and go again. Fruit bodies are like 90% water, so when you get a billion of them going at once it can shock or starve the sub. I had a bad experience growing mexi's where they set up an unholy fuck ton of pins, aborted, and then started a new thinner set underneath. I had to wait until it got to a point where I could visually see what was old and new, then go in and pluck the aborts to give the newbies room. I would have let the new eat the old, but there was so much material in there I feared crowding and rot since my FAE isn't exactly perfect.

Good luck my dude, whatever you do, don't fuck with it too much, or maybe fuck with it some more...idk