@larfy which size of balls you're using? Might be, you should switch to 2.5 from 3mm, if that's correct.
What kind of heat source you use? Could be weak torch or not well leveled head in IH.
Airflow on cap too loose?
Sucking too hard?
Over moist herb?
You should be able to extract a bowl nicely without reheating. But takes some time to grasp, at least in my experience.
All but the rubies I used were 2.5mm, the rubies are actually my 2nd favourite.
Mostly I'm using the wand at 530, sometimes a 3 flame jet lighter.
Aircap is open about a pin head.
I doubt I'm sucking too hard, I'm doing small mouth to lung puffs, I have a few then top up the heat when the indicator gets close to the 1st bar, and repeat until it tastes bad. The airflow is on the restricted side but still a little open.
Erb is on the dry side of perfect if that makes sense. I find the same with hash, I have to top up pretty much exactly the same as with herb.
Yeah I don't doubt it's possible to finish a bowl without reheating but I'm pretty sure that would ruin my throat and lungs
, maybe with a bong it would be fine. So yeah most likely it's just a result of my way of using it
Edit: just tried 550 and only needed to reheat once, I didn't get a 2nd click so I'm going to try a bit higher next time. I finished the bowl with just 1 reheat using Boro this time