Really? What happened to the 400 hits they advertise on a full cart?
Actually they don't. They say '200 to 400 hits per gram', big difference.
Sounds like you have several things working against you that have led to self induced failure to feed. Do yourself a favor, do some reading on the subject and try again?
A few points of advice to consider. Get some 2.4 Ohm carts and learn to use them properly at 3.7 Volts before you try the high power stuff. Persei is a power tool for experts, notice the warnings? That's not hype, it a tool for an experienced guy. That's why it comes with the high power carts.
Weigh your carts empty. Add half a gram (one is too much, invites leaks), follow the loading instructions (specifically preheating the center carefully which you evidently didn't do getting the air bubble instead). Relaod the cart when it gets to .2 from empty. Never dry burn the cart for any reason. 'Looking at the glow' is wrecking the cart for practical purposes and is not even possible in a well running cart (the oil masks it).
Given reasonable concentrates and good technique solid performance in the 2 to 400 hits per gram range for an average of maybe 3 grams is routine in experienced hands.
Stick with the 2.4s until you master them, not just get them to work, but truly master their use before moving on to higher powers. Many (most?) of us stick with 2.4s, finding the extra troubles and degraded tastes poor trade offs with the higher power carts in the unending quest for yet bigger clouds.