So I finally got the tilt/trim system rebuilt and today I went to fill it. I raised the system to the full up position and filled the reservoir up to the bottom of the fill hole. I cycled the system up and down a few times but the only thing is does is make a God awful screeching sound and then sounds smooth. I go the other direction, it screeches then gets smooth. I keep filling the system and it keeps making the noise. Right now, the reservoir is full in every position and the fluid appears to be very milky. I'm think from the air being forced through it. It won't lift unless I help it along and when I lower it, it drops instantly. Any suggestions? What am I missing?