Although though don't have an Essex, all of the shade stops I've seen are via two yellow adjustments at the head of the roller shades vs. anything in SilverLeaf. There is a special tool for accessing them (came in a long brown envelope in a drawer in my rig). The problem I've experiences is it appears that sometimes the cabinets are build around them after they stops have been set, making getting to the adjustments with the supplied tool darn near impossible as woodwork is in the way since they are not oriented downwards. Luckily, on my rig, I was able to adjust by manually flipping the shade one way or another around the roller by hand. This either extended or took up enough slack that the preset limits were okay.
Good luck!
Best,
-Mark