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Sounds like the fine tuning is working OK. And it's a turret type tuner. And you've probably done an adequate job on the contacts already.
Before you do any more washing, eyeball the front of the tuner for an access hole to the tuner's oscillator adjustment (sometimes called the 'bulls eye' adjustment). Each of the channel strips contains a metal slug which aligns with the hole when clicked to the corresponding channel (eg., when you click to Ch.3, the Ch.3 slug will align with the hole), and you adjust the slug with a non-metalic thin screwdriver to tune in the channel. Do this with the fine tuning at mid range. (Or if the VCR uses Ch.4, do the same with the tuner clicked to Ch.4).
Occasionally one or more of the slugs will be missing due to someone's screwing them all the way out. You should be able to shine a light through the access hole to verify each slug as present, or pop each of the strips outa the turret to visually inspect them and see if any slugs are missing.
Don't worry about the vertical issue until you get the signal tuned in properly.
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