I had to do a little research on where Hoya soidaoensis came from in order to figure out why the buds were blasting.  Hoya soidaoensis was found somewhere on the side of Khao Soi Dao Nua Mountain, which peaks at 1,550 meters.  I hypothesized that maybe it preferred growing at cooler temperatures than I was giving it.  My grow tent where the plant lived was getting very hot with temps getting up to 95°F during the day.  When something doesn’t work, you change it. I moved the plant out of that tent, and put it into a much cooler tent.  Almost immediately I saw an increase in vigor and many new peduncles produced.