What else can I try for my Stylist 834?

I had to replace both gears under the bottom of the bobbin. To replace the one that sets verticle, I had to loosen a few things on the bar and pull it back to remove the old one and put on the new. Is there any adjustments that I need to do on that bar, it has a gear about mid way that I had to loosen. I have been trying the instructions that Ken sent, I got it where it where the needle won't hit the medal plate when I zig zag but it still skips.