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I may have missed further discussion of what I have written below on this. But the importance when adjusting the stagger tuning in a video IF amplifier is to get the 45.75MHz video carrier at the proper 50% point on the slope. The 44MHz marker is relatively unimportant: it only provides a rough midpoint of the curve.
The traps should be properly set to attenuate the adjacent sound (47.25MHz)and video (39.75MHz) carriers and co-channel (41.25MHz) sound carrier. The traps should not be used to shape the response. That is except the adjacent video trap (39.75MHz) may have been adjusted downward a bit to improve weak reception. Distant TV stations may warrant adjusting the fine tuning to bring the video carrier higher on the response to improve signal to noise and moving the adjacent video trap would improve intercarrier sound performance. But this is the only exception.
The traps should be first set before sweep aligning the VIF strip.
When sweeping the Video IF, the video carrier is placed at 50% of course because of the vestigial sideband video modulation for analog television broadcast since the 1930's.
Most color sets used the "haystack" video IF response, so named for obvious reasons. It is important to make sure the color subcarrier (42.17MHz) is at 50% on the forward slope at the same time the video carrier (45.75MHz is at 50% on the rear slope of the curve while at the same time the co-channel sound trap (41.25MHz) is accurately aligned. The 44MHz in this case is a guide and should be located roughly in the middle.
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