x6 rear arm broke, used b4 arms... any ideas?

[samboneecanada]

Hey there, I used the b4 arms in the back and I used the tranny height spacers to make up the difference in width of the b4 arms on the chassis side.

I found that they worked however I wanted to know what your thoughts were?

here's the track that we were running on in NY, USA.

http://www.youtube.com/watch?v=u0xIIQBozB0

this was the a main, super high traction