6max vs. 5max?

So, I'm a consistent winner at 100NL 6max on stars, and have built up my stars BR to about 6k through it... but I also have some money in paradise and pokerroom, and I can't put together a winning 5max session on these sites for the life of me. I really can't figure it out, if it's the players, or the change in table size?

Anyway, yeah i know the players are fishier on 'dise and PR... but assuming it's the table size causing my problems... what adjustments should one make going from 6 to 5, if any?

Play the exact same game you would play at a 6 max if you weren't UTG.