the trem block is anchored with springs on the underside of the body. you can adjust these to change the way the trem 'sits', ie level with body etc.  the temelo bar just screws in to the block, you can screw it in tight so there is no play, or leave it a little loose so you you can move it about a bit.  you wont have any probs with palm muting, you will naturally figure out the best position for your hand to be.  but i will say i had an esp once with a floyd rose lockin trem, and i hated it! took decades to change strings and tune, and was very uncomfortable to palm mute.  but then again, kirk hammet seems to manage just fine..... ???

  I always loved my Floyd Rose, never had a problem with it. Changing the strings was a little more of a challenge than other setups but I would just change one at a time instead of pulling all 6 at once.

i tried a bc rich warlock the other day, it had the new version of the floyd rose on it, where you buy the strings already cut to length, all you do is wack em on and fine tune it. it seemed a hell of a lot quicker, and easier too.