DSS driveshaft and LCA issue

[Tuffnuts23]

I put in a DSS driveshaft recently. In order to bring the driveshaft length into spec, I had to shorten my BMR LCA's to as short as possible. I don't have any vibration issues, but the car feels real sketchy on the top end. I made a few test passes on the street this weekend and I had to get out of it after the 1/8th every time. The ass end was very unstable. I still have the stock UCA and I'm running BMR relocation brackets. Anybody have any input. Here is a link to one of the test passes.

https://www.youtube.com/watch?v=DcVKXGZHYmQ

 

[BMR Tech 2]

Is your car lowered? It looks like it from the video.

You'll likely want to install an adjustable upper as well. That should allow you to lengthen the arms back to at lease the factory length, then adjust your pinion angle to fall within DSS specs for their CV joint.

 

[Tuffnuts23]

Yes, the car is lowered. I'm going to take some measurements and see if I have everything square. I think I am going to need an adjustable upper. Even with my lowers as short as possible, the gap between the cv joint and driveshaft tube is still an 1/8th" too long