Possibly something wrong with it - it is supposed to over-center. My guess is that in adjusting in both directions, you either undershot or overshot the sweet spot. Doesn't take a lot to adjust it from not enough to too much. If you have the patience, you can adjust it one notch at a time all the way in, and then having counted how many notches, then go back that far then start adjusting again one notch at a time but this time outwards. It might take 10 mins but it could avoid an unnecessary disassembly

Go with Eddie's approach! : ) I forgot to take into account that you said it turns the main over when held in. That indicates that the clutch is definitely making sufficient clamping force, so if it doesn't over-center, then it's probably too far in, so work your way out, one notch at a time. I found after adjusting my clutch post-reassembly, I had to adjust it a couple of times as it "bedded" in, so you might find this too. One way to check if it's too slack is if you leave the compression engaged, and try to engage the clutch, if it makes a poor half-hearted attempt at turning the main, you might need to tighten it up a bit, even if it over-centers ok