Hi there-

I have a saddle I'm interested in trying, but it is about 12mm shorter than the existing saddle I have. I have Retul coordinates based on the longer saddle, and I'm wondering how to try to use this new saddle length to adapt to the fore aft & reach numbers.

Is it simply just adding 12mm from the reach for the shorter saddle, and for/aft of the existing saddle, or, should I measure based on the center of the saddles? Also, same goes for height. This saddle has about 8mm less vertical height. Do I just add the 8mm to the existing saddle height, or put the saddle height to the same as the existing?

I do not have any fitters in my area, and it's about a 3hr drive for the nearest one, so any input is greatly appreciated.

Thanks.