Sorry Martin, but it seems you SO want someone to say you played this fine and you just didn't. On a table full of limpers you want one of two things: a strong hand like QQ or AK where you can raise, pick up the dead money, isolate and take down a small-te-medium pot; or a drawing hand which gives you as many options as possible. T4s isn't that, for the reasons outlined above. I would MUCH rather play 45o than T4s - the added hidden straight value adds loads of value to the possibility of making two pair or trips. Your flush is very likely beaten by another person drawing to the same flushflush, or if the board four-flushes, but are you going to be able to lay it down if someone plays back at you?