I have a similar story although I still prefer torch heating in general
I have a cuboo induction Heater, and was never really satisfied. A ti tip was combusting at the second click and a ss tip was uneven heating, black at the top, light brown at the end.
That is until I recently switched the Glas intake from the induction Heater, i got 2 different intakes, one w/o Glas at the end, that one need 2-3 silicon plates to get the right height, and in the end it's a difference of a mm or so, but it's working now nearly as good as a single flame torch, now I use the induction Heater at last from time to time.