I'm building a LOC 4 for my high power cert and had a couple of questions. I'm using titebond 2 for most of the build, epoxy for external fillets and JB Weld for the Aeropack retainer. After I was into the project I watched a build video where they sanded the glycine off the tubes where appropriate. I hadn't done that. Any concerns there? I bought an Aeropack motor retainer for my 38mm motor tube. In the future I would possibly like to try t nuts. My research on this forum for motor retention mentioned this but I can't find much detail. Any guidance or threads to pass along? Thanks.