Acetone directly on a scotchbrite pad and scuff the fletching area, then go back through them with acetone and a clean rag to remove any residual from the shaft. Gorilla superglue gel is my adhesive of choice and have never had a problem with blazers coming loose. As was mentioned, less is more for sure. Just put enough glue in the valley of the vein to give it a shine, then apply to the shaft with pressure.
I use just 3 drops on base of Fletch and spread with tip of glue bottle or tube. Make sure jig is adjusted so base is flat on arrow. Using fletchtite Platinum 2 i think it is. Got a new bitz jig and it's seems better than the Jo Jan had previously.
Platinum is a great glue as long as you leave it in the jig long enough. It's not a fast set glue! 4-5 min minimum per fletching. Also, Denatured alcohol for cleaning.
Good luck
I’m a fan of acetone for cleaning the shaft and base of the vane and the blue cap Gorilla CA. I have noticed that after 20 years or so my Bitz magnets do not seem as strong as they used to be but it makes quick work of the job. I don’t use wraps and it’s just a matter of using acetone and a small cloth to remove dried glue from the shaft of I need to reflect an arrow or want to change something.