Exactly what are “configuration bits,” and all the caution about adjusting them? As I read about it, it seems a single CV is used to store related on/off toggles in several binary 1 or 0 values. The value of these binaries is expressed as a base 10 number. That number will be represented by a unique combination of binary numbers. For example, CV29 in one of my locos has a value of 34. That means that the binaries for 32 and 2 are “on” (value of 1).That would be bit 5 and bit 1. The bit numbers start at zero. So, at eight bits (bits 0 to 7) needed to span values from zero to 255, that value of 34 would look like: 00100010 If I need to change bit 3 to one for using the 28-step speed setup, it will look in binary like: 00101010 That bit 3 is the binary expression of eight, so 34 + 8 = 42, So the value I enter for CV29 to change only that bit, would be 42, right? This seems reasonably straightforward, but all the caution in decoder users guides is unaccompanied by actual instruction or explanation of how to do it, or how it works, so it leaves the user on their own. But anyway, am I right on this?