ya thats what i thought..ive had some wc jacksons that i had just bought and would do that..shoot at it, hit it(in my hand) and it not stick...i increased calcium, d3, ans humidity..(but watched them carfully for a week after to see the effect as mountain chams like cooler temps, high humidity, and a varied diet compared to panths, veileds,..ect ect..)..just try the cooler night time temp and higher humids....(also if they are having trouble actually eating.., do they hand feed?? if so softly thrust it towards the mouth when they shoot..they keep the eyes closed for a second and the mouth in a chewing effect ..it gives you a second to insert the coated prey\food item)..good luck, in time im sure thing will get better..
(those damed mountain chams love an odd climate!!)
p.s. i just hit my 420 posts!!! haha