Am I doing something wrong?

This is the third, **THIRD**, time this mount has dropped for me *this week*. I was ecstatic the 1st time, flabbergasted the second and thought "*eh, I can't bring myself to throw her away, I'll just put her in my bank with my other duplicate mounts and battle pets I seem to be acquiring over the years in case Blizz ever decides to make them tradeable some long day from now*." But now.. *now* I have a 3rd that I can't even really collect because I have one already in the bank :')

**Am I doing something wrong by taking all the curses at the beginning of the instance with the Horseman?** I had heard *rumors* that it would increase your odds for a mount (and this thing always seems to drop on my 1st attempt of the day) so I already know that the Ghoulish Charger has an increased percentage in odds to drop on that toon but.. does the curses only effect this mount? Should I not invoke the curses to try for the old mount (which is the one I'm desperately trying to get to drop)?

If I could give these ponies away to y'all I 1000% would :(