Hey guys I have this royal hunter RDA with clapton coils with Efest 18650s, the RDA runs fine on my sigeli 150 but when i throw it on my Phantom mech by Wotofo it fires really slow. I have to hold the firing pin for about 8 seconds to have any vape come off the coils. A few months ago when i got it, it has worked fine. I tried switching out different pins and springs but nothing seems to help. Anyone know how to fix this?