Garge door won't close tightly

I leveled and balanced my garage door following some of these videos after replacing the bottom weather seal but, although the door is perfect and seals nice on the floor while I'm working on it, as soon as I tighten the set screws on the spring and remove the winding bar, it lifts the door about 3/4" in the closed position leaving a bottom gap on both sides and the middle is barley touching.

I've tried pushing the spring out so the coils aren't touching and and tightening it down and that didn't work so I let it go back but it's the same no matter what.

The door did close on the thin old bottom strip so it's nothing to do with the permanent brackets.

I've been working on this for a week now and all crap is blowing in the garage.

PLEASE HELP! 

There must be something weird I'm doing when I tighten the set screw on the spring that adds this tension. I even tried leaving the cables on both sides pretty loosey goosey before tightening the set screws on the spring but the cables are still so tight after and the door is still up a bit.

This has nothing to do with the opener. The opener is already set to push down all the way and I can't even push this door down by stepping on it. The only way I can get it on the floor is to put a winding bar in and take the set screws on the spring!

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