I have a few knives with western handles that I'd like to finish with Tru Oil to help keep the wood a bit more stable and to provide a better looking finish. The main ones I have in mind are a vintage Sab with rosewood scales and a carbon ZKramer. My question is about how I should approach applying the oil considering that the bolster, rivets, and tang are all exposed. Is this going to be a problem? I've applied Tru Oil in the past to many wa handles, and had no issues with the horn or pakka ferrules. I pretty much just wiped a very thin layer on the whole handle, let it cure, and then sanded with 0000 steel wool between applications. Is that approach appropriate for a yo handle? Or is all that exposed metal a liability? Should I use painters tape to cover the bolster, rivets, and tang? Please let me know your experiences. Thanks!