I am using a H11A4 and a mos3022 opto-isolators for a triac dimmer setup.Right now I have it fading a light-bulb up and down.And it works as expected, the only problem is that most of the time there is a flicker on the fade-up (but not always).It occurs at random places in the fade-up phase, and I have never noticed it on the fade-down.If I set it dimmed to a specific value, it does not flicker, so