i am in the same boat as you. switching from fr to sh. so, i will be interested in the responses you get.

i can tell you this. 6max is much more dependant on good reads of a player's tendencies. is he tight? then push him out, until he pushes back. is he aggressive, push back to gain respect. is he passive? why is he hanging around?

all these can be answered in time at the same table. you just HAVE to watch more than fr.

one thing i noticed works for me, though. i will play the first hands i sit in on loose and aggressive, to test the table. then, i tighten up and still get the action i deserve because of the previous aggression. they tend to get the first impression that i am STUUUPID...lol. kind of fun to watch the chat light up when i hit a real hand. they go crazy like its a bad beat, and forgot to notice i have been a rock for the last 5 rounds.

hope this 2 cents helps.