Not very old toshiba VCR, tapes ok but a lot of shimering on playback. BUT pre recorded tapes done on other machines much worse, and shop bought also a lot of shimmer/ unstable, tracking working you can see it moving about but still not right, best way to explain it UNSTABLE PICTURE JUDDER, never had this on previous vcr , is it the make toshiba not so good on vcrs or could it be the scarts ?, last year i bought some new ones , cant remember if they where fully wired (or RGB is it) ?to be honest dont understand the difference of rgb or fully wired , could i possibly be using RGB scart when i should be using a fully wired? is that causing all this unstable juddery platback problem ?, only thing is its a lot worse on tapes that ive had for years , if this is faulty can someone point me to a vcr that plays any thing on tape even old ones i have well, with clean stable pics many thans for any advice.