Was told by Benchmark Tool that is a Top con Dealer out of Raleigh, NC that the Topcon receiver will not work with a Bobcat. I have a 2023 Bobcat T770 with a 2021 96" grader using the Bobcat BLR2 receiver and the owners manual has instructions to use a jumper cable as a connection on the left side of the receiver. Unit will not go into auto grade using the jumper cable, but will go into auto grade without the jumper cable. Would like to use the Topcon receiver because of the adjustable deadband. All sub-grading doesn’t need to be as tight of a tolerance. YouTube has a video with the Topcon receiver working, but the control cable to the receiver appears to have been modified and spliced. @:31 seconds. My setup works good with the exception of the laser line on the receiver will not stabilize and continually bounces up and down alot. This happens whether auto grade is off or on. The position of the receiver to the laser seems to impact the issue. Had the stability issue with the Bobcat BLR2 and LR410 receiver.