there should be a forward position in the blade holder so the blade is in the gutter and not on the strip. completely unscrew the blade holder. remove the blade then insert it in the forward slot.
you might also have to twist out more blade. we use 2 different holders so we dont have to keep re-adjusting the blade tip. CB09 for kiss cuts and CB15 for perf cuts.
ours doesn't look like it has two positions...