Good to see some pictures.
Find a fix point...add one nail, screw etc...place all the lines together or 4 nails as you said but that is a extra hassle with not much difference (minor)
As you hold the bar the furthest knot on the steering lines is the default.
On the kite you have markings standard-lightwind! The knot that is further in is for lightwind (basically it shortens the backlines thus the kite gets a different angle = the angle of the kite changes = more wind)! I do not use the lightwind setting in any kite as when you get in low winds when working the kite up and down (8 figures) sometimes you get to back stall the kite when you dive it low. That is my preference! Some kiters here fly their kites on the light wind setting for that extra grunt and for the kites to be faster...i prefer to have the kite as slow as possible since with strapless riding on the waves i prefer to have the kite steady (ps. when i was in Mauritius some years ago this crazy waverider would say "Keep the kite as low as possible so that you get a better edge and not having a lifting effect but not too low when the waves are big cause you get no wind")
Back to our subject...it seems that your back lines are overstretched!
Add the front lines on a fixed point and pull them a bit to become equal with the steering lines or just use the middle knot on the bar its the best-quickest solution! After you have everything on a fixed point then you will know what to do.
The kite seems to be ok from the pictures.
The bar is 2011 you are correct.
The Envy is the best kite that i have flown and have owned all the models as of today and you made a good choice.
Let me know if you need anything else.
Thanks for your help, really appreciate it. The back lines are longer on the first knot but seem equal on the second knot.When I was out surfing I tried:
1. Lowest knot + Standard bridle knot = Almost no turning. Kite fell into the water if flown to low even though wind was howling. Canopy flapping. Could hardly surf.
2. Lowest knot + Light Wind bridle setting = Kite turned slowly. Still delay. Felt like I wanted a longer bar. Very wide arc in turns. Like 17M. Could surf but with very poor control. I had to lie down and put kite at 12 everytime someone surfed near me. Worried I would fly the kite into someone's lines.
3. Top knot + Light wind bridle setting = No back line slack from what I could see. Kite still slow but over powered. Flew me automatically too much up wind and then started to flap. Power very off and on. Jerky riding. Handled gusts poorly. Could surf but with very poor control. Got very tired from trying to ride.
Could it be the bridles? They are very long and the kite is small.