Hi,
Not sure if this need a screenshot or gdb. Along the way of Jalan Pahang (From Jalan Genting Klang to Titiwangsa side), there is a junction to turn into the DUKE highway. While routing to somewhere near Batu Muda, Garmin suggested me to use DUKE. But along the Jalan Pahang, it keep asking me keep right, while the junction to DUKE is at the left. All of the sudden, right before reaching the junction, it asked me to turn left into it, which is almost impossible since it's a quite high pace road and there are three lanes before I can reach to the junction in this short time. Not sure it's the Garmin Mobile XT problem or something to do with MFM routing.
Hope this helps. I will try to contribute more as some of the small roads I used doesn't seems to appear in MFM.

MFM.