Hoya wallichii Continues to Vex

Hoya wallichii is definitely not for the beginning Hoya enthusiast; it is maddeningly difficult to grow and getting photos of the flowers fully opened is almost impossible.  I guess it could be done by getting up at 3:00 am, but so far I’m unwilling to do that.  Below are my attempts to open up what I think is my 3rd or 4th flower to make it to maturity: