I don't have any tips other than to stay away from event sinks. MS has
basically said not to build on this technology for any long term
solutions. It's buggy at best and a bear to maintain plus the fact that
with V2 all this goes away so you'll be left to completely rewrite your
code. Your choice to implement it (if you've already made that
investment in time, etc.) but I would suggest looking at building on a
V2 solution if you can.