Hi, I am having trouble with my hydroboost system on my 24v. The brakes and powersteering work, but not as they should. There is some power assist on both components but it is only about 70% what it is on my friends exact same truck. I have just replaced the powersteering pump and it is exactly the same, I have powersteering and brakes, but not very strong. I am wondering if there is a screen or valve that could be pluged?