i think i have a theory to my own problem, tell me how likely this is...
since i made an X with zip ties on the skids, it'll stretch like a rubber band because the cf rods on the skids are not stiff. and while i might think i'm adding in negative pitch, i'm actually on the way of reducing positive pitch, it came to a point where the positive pitch has the power to pull it down but not have the power to correct it's 'rubber band' bounced up, and as soon as it bounces up, the 'rubber band' releases and it drops back down.

it is confusing, but try tying two strings across the skids to make an X, then gently pull on the middle of the X, you'll see what i mean. i doubt i have a sticky collective. i lube all parts and running bh with 3bb blade grips.