Tranistioning 25 short to 50 short

[mosuavea]

I made the switch from 25 short to 50 short about a month ago and have struggled some bit. I played 30,000 hands at 25 and sustained a clip of 10 PTBB/100 during that time period. I finally made the jump and coasted along at 50 short for the past month where I have seen wild swings, leaving me down 1 PTBB/100 after 15,000 hands. I know I have ran bad the past week which attributes for a big part of my losses, but my stats and game have been the same through out, which leads to me questioning quite a bit.

Pretty much what I am asking is how have peoples games morphed from when they started out at 25short and moved up through out, or are the 50's just a different kind of beast?