Overclocking help

[howdyho]

So I recently got a new Asus IPS 60hz panel and I tried overclocking it, but only reached around 68hz on automatic timings, anything higher would give no signal error. I later decided to switch over from DVI to HDMI to get rid of the big clunky dvi cable while ridding the redundant audio cable I had running to it.

Well after i hooked it up to HDMI, I redid the timings, and got past the initial 68hz wall I hit. I pushed it to 80hz, then 90hz, then 100hz, then 105hz, then the final stop 110hz! Although, once I get past 105hz the picture intermittently goes in and out to a black screen, which makes anything above 105 unusable, but they did display.

I noticed a few problems though. First off, there are small horizontal gaps at the top and bottom of the display. They are very small, about 1/8" in size. Anything above 68hz shows the gaps It looks like the resolution isn't being properly scaled to fit the entire screen, which might be the reasoning for the next issue. And that issue is font doesn't look as crisp as 60-68hz. There is a slight distortion to it, but it's very minor, you might see it in this screenshot (if you look above the green bar, look at the large "105 fps" and "105 hz") -



That is one of the tests I've done. I've also played a few games where I could hold a solid 105FPS+ (BC2, L4D2, NS2) and the experience was so smooth.

With that said, is there anything I can do to get rid of the gaps and possible fix the slight distortion in the text? Maybe custom timings I can try? For the text I tried messing around with the sharpness, but it doesn't seem to have any effect. For the gaps, I messed around with the scaling options in nvidia control panel and nothing seemed to sort it out.

I should also mention this was done on automatic timings using the nvidia control panel. The panel is also 1920x1080.