Good to have a leveller. TBH I just leave my STAC on x10 and crack on from say 30 - 250m Along with the occasional a person nudging the three hundred mark ( in great ailments, and if I can’t reach it or it to me). I've my S10 on https://auto-brake-parts09753.mybloglicious.com/51730282/the-2-minute-rule-for-senopex-rex-s10-lrf