This was meant to replace the MC in our Cobra Kit Car. We made a seat hood according to the instructions and installed it in the car. It worked fine at first, but as it got warmer the fluid wouldn't return to the reservoir and the brakes would lock up. We tried flushing with a different brake fluid and got the same results. Upon closer inspection, we found heavy debris in the front and rear vents. We finally got the device locally and it works great. It looks like the company that restored the device did a crappy job cleaning it up.