I'm running track drops with a Nitto Pearl 9 (which in actuality is around 98mm/100mm). But I'm not satisfied with it because I have a short head tube and it's preventing my stem from going all the way down thus making the stem protrude too much.
If I were to swap out the pearl for a jaguar, what size would I need to get to compensate for the drop? I'm trying to keep the reach relatively the same and I usually only ride on the top of the bars. Should I go shorter and get an 80mm jag or stick with a 90mm?
2003 Specialized Hardrock, 2004 LOOK KG386i, 2005 Iron Horse Warrior Expert, 2009 Pedal Force CX1
Based on what I've read, Nitto measures all of their stems the same so if you don't want to affect your reach, buy the same length Nitto stem.
Another option you have is modifying the length of the Pearl by cutting off some of the excess length and using a short bolt (depending on how far it's threaded this may not even be necessary). This could be somehwat tricky with trying to match the angle on the bottom of the stem (assuming a wedge style stem) but some filing/sanding could clean up any mistakes. Measure the insertion distance marked on the original and transfer that mark to the shortened stem to ensure proper installation after the modification.