I had a scrolling issue with my SMS-1 (the only composite device) connected to my 970.

I worked with outlaw but we were never able to resolve it, so I just plugged the SMS-1 directly into my display.

I have no video issues with my 990.
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Outlaw 976, Outlaw 7700, Pro-Ject Phono Box S
Sonus Faber Domus Grand Piano (F&C), Niles HDFX (Surr. & Rear Surr.), Outlaw LFM-1 Plus, Velodyne SMS-1
Sonos multi room audio
Video: Sony KDL-46V2500, OPPO BDP-103, TiVo Premiere XL4
2-channel: Outlaw RR2150, SF Concerto Home, Outlaw LFM-2