I cant butter or nollie

[koolkale]

when buttering of a knoll, do a 90 into your butter. This allows you to get a better axis, and it gets you out of the habit of sliding into butters.

 

[Cyanicenine]

Can someone explain what j bars are and what they do for me please

It's just a piece of foam you attach to the outside of your liner to make it thicker around the heel and ankle so you don't get heel lift. They sell them at tognar.com
http://www.tognar.com/boot-fitting-foam-l-pads/

There are also these
http://www.tognar.com/boot-fitting-foam-c-pads/

And these
http://www.tognar.com/boot-fitting-foam-ankle-wrap-pads/

Depending on how much more grip you need. Or you can just buy some of the sheet foam and cut your own shapes.