Power bomb mixture screws

Got a set of 48 riva power bombs.

they have different low speed screws to my dasa 48’s. Much chunkier and AM looking.

If you wind them right it they Stop before they bottom out. If I take the spring and washer if they bottom out normally. As they are, they both end up about 3/4 of a turn out when fully wound in with the spring and washer in.

not sure if this was intentional to stop people running motors lean. Just a pain to tune and feels wrong only having it 1/4 out even though you know it’s more like 1 turn.

I’ll cut springs if I need to, just interested to know if this was intentional, or if someone has fitted different screws to them
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