I swapped my cluster yesterday with a usdm gsr into my gs but now the speedo is boucing within 2 mph. Only thing that i kinda broke was the plug with the speedo cable. It came loose with the cluster (still clipped on the cluster) I had to push it all the way back into the cable. It is snug now but i drove it to work this morning and noticed the bounce. Ima try to redo it to see if it helps but any input before then will be great. Thanks