One tip that will help you. Take each bundle of wet sinew before you dip it in glue and scrape it with a razor blade on a hard surface while holding one end. Three benefits. First you are removing any remaining tissue and you’ll be surprised how much junk still comes off. Discard the junk. Second you are squeezing out excess water so it will jell faster and less soaks into your wood and doesn’t dilute your glue. Third the blade will separate the sinew fibers so it will lay perfectly flat especially on the ends so you don’t have lumps where it overlaps the next bundle end to end.
