Dramatic voltage drop issue
Is it intended that R3 be changed from 70k to 470? That's a pretty big difference.
I also can't tell if the TIP41C is workable or not because I can't find any information on BSZ0920NS. I see from comments that BSZ0920NS is a mosfet and TIP41C which I did find on digikey, is a regular NPN transistor. I'm not sure they will fill the same role since mosfets work a little differently.