Just replaced my Indy forged baseplates with the Indy IKP baseplates out of curiosity. Initial impressions are that I need to get used to a taller truck again and I hate not seeing the flush kingpin nut, but the turn feels so much deeper and sharper. I literally can’t wheelbite ~55mm conical fulls with what I believe to be medium-loose blue 92A cylinders and me being 165 lbs.
Does the Indy IKP baseplate actually change the turn relative to the standard baseplates? I know in my case I’m going from forged (53.5mm high) to IKP/cast (55mm high), so there’s no doubt a change there, but they feel more Ace-like now than I remember my old Indy standards feeling.
I feel like the inverted kingpin baseplate works the same way as the standard baseplate, the only difference being you can't easily see how far down the nut is, which is a bit weird, but I think they still turn the same overall.
If you do the inverted kingpin right up so it is as deep in as it can go, then turn a full turn back, that should be the same height as a nut flush with the top of a normal kingpin.
You might find the trucks are tighter than normal like that, or that they are looser right now than what you had them before, but it is crazy how much 1.5 mm height difference means to wheelbite, or lack of it.
Curious to hear how they feel, or how much you loosen them off from tight in as well, but I would also mark the kingpin heads (just a dot with a black marker or something on one side) and keep an eye on it to see if it loosens off by itself at all, as they are prone to do, so said a number of people I know.