Thanks for this link, couldn’t find anything in rule book but apparently it’s been addressed.
From above link:
We don’t have a rule that spells out what can and can’t be done in relation to start position between PCC and the handgun divisions, but before PCC we didn’t have Open competitors start at a different start position than Single Stack competitors because we wanted a fair match for everyone. Yes, PCC is different, and it requires a separate start position, but it needs to be as close to the handgun start position as possible.