Replying to Marker Schizo Problems Please Help

So i bought a pair of k2 kung fujas last year and i had them mounted with marker griffon schizo's. Ive skiied them maybe 6 times and ive noticed that when i adjust them to be all the way forward, the the mark that says stop or +3 which is supposed to be true center,  within half a run they are already back to +2.  So i took them to the shop that i bought them from to get them checked out the tech tells me that they arent supposed to go all the way forward and that they are only supposed to go to +2 even though the adjustment plate clearly says +3.  So can anyone that has had this problem or knows anything more than i do about the adjustments for this binding please help me out.