The measurement between upper pulley teeth and largest cog for a 36T cassette is 11mm. For a 44T largest cog, 7-8mm is the correct distance between the largest cog and upper pulley. The chain gap adjustment for XPLR rear derailleurs is completed with the derailleur shifted inboard to the 2nd largest cog. If you have an XPLR chain gap adjustment gauge, install the gauge onto the upper pulley, with the top half of the gauge behind the largest cog. Rotate the b-adjust screw until the appropriate gap is achieved.