Intellivision Av mod - Video won't sync

[INTV123]

Trying to mod my INTV 2 to output composite video. I wanted to remove the RF modulator and found this circuit Here to get the mod to work with the composite mod from the Intellivsion wiki, and it sort of worked... the picture would show up for about a second or two and then the colors would change, and the video slides across the screen and loses signal. Tried putting the rf mod back together, and got the exact same results as the board i tried making. Mind you, I don't know if the rf modulator even worked, as i couldn't get anything to show up on my tv from it using some alligator clips. Also not sure if there may be some other problem with the board or the power supply i'm using.