Replying to Quiver additions to k2 reckoner 102s

I was on the 184 reckoner 102s mounted at -2 on the team line last season, they were super fire for everything especially when we got some fresh parmesan on the mountain. The only thing I noticed was that they would get a bit squirrely and flappy when I pushed them really fast on the ice coast. Im wondering if a stiffer narrower ski would have any major benefit for those hard pack days when I just want to rip, something like a poacher or soul rider. I thought the recks did surprisingly well on the hard stuff in general which is why im not sure if another ski would even be worth it.