SRing for events in Generation 6

[Papasmurf]

I've heard rumors claiming that SRing too much prior to receiving event Pokemon, or stationary Pokemon like Xerneas/Yveltal can actually lower said Pokemon's IVs. I usually SR at least a few dozen times, and noticed I was getting IVs on the lower end of the spectrum (above average, relatively superior) for my Celebi on X more frequently after 20 resets or so. Have you heard or confirmed this rumor somewhere?