Make sure you know that to get a band 6, this is done by the BOS and they align your marks. In PDHPE I'm not exactly sure of the raw mark cut-off to effectively align to 90+ (band 6).
Scaling is a different process and you must understand that BOS never speaks of it and is done by UAC - for ATAR. Basically, almost all marks will align up for BOS purposes (except for very high raw examination marks in certain courses) and then everything scales down for your ATAR value except very few courses (including MX1 which remains the same and MX2 which goes up significantly in comparison to others which decrease)
Aligning =/= Scaling and both are done by different bodies.