[1.7.10] particle coördnates & movements problems

Hey,

I posted a topic before, but unfortunatly nobody knows how to solve the problems.

I figured some of the problems out already, but there are 2 still standing.

1. The particles I spawn have an offset lower than 0.01, but the offset is still clearly visible. I spawn them above an TileEntity, so the coords should be the same for all of them.

2. the particles are moving with the player. It sounds wierd, but whenever I move the player, the particles move along with the player for about 3/4 block, and stay there until I stop moving. than they will return to their original place.

I tried to make an video of it, with me moving left and right, showing the particles flying left and right with the player.

the link below is to an .jar file with the codes and the clip.

https://www.dropbox.com/s/dbthloptx75p8aw/Particles.rar?dl=0

I hope somebody can point me in the right direction!

Thank you!