Dude, what happened to my roll?

I roll fairly well, 100% with a GS. Yesterday, u[ here on Lake Superior, I was rolling with the big Werner Ikelos blade. When I tried the smaller Tybee blade, however, things changed. I made it around but had to low brace to finish. Same happened when I tried JB's Cypress (205). It bugged me to no end.

 I tried different speeds with no change and still do not know what the problem is. I hope to get myself video taped to hopefully see what bad habit I've picked up. Until then, I remain baffled and frustrated.
On another note: I apologize for the drop in frequency and quality of these posts. I need to get my photogenic brain back in gear. I promise better in the future.

Paddle safe...
DS