Makaris

Hey, I'm a total scrub with VTOLs and single stage stuff, but I followed the flight path laid out in the OP and only made it to about 1700m/s before my jet engine died on me. Repeated a few times. Could I need to throttle down and go slower? Also, is the initial assent supposed to be super slow? I mean no criticism cause this things are totally amazing and I really wanna mess with them! Just wondering if their is anythin