Can't figure out why my motors run fine pointing at #1 either. Plenty of adjustment with the vacuum can too. I'll have to ask my other gear head friends why their motors run well. Notably one who has been wrenching cars for nearly forty years and has over 50 cars in his collection at any given time.All car guy should have that dizzy wrench, mine for 50 years or so. Its amazing my cars run fine with #1 pointing to #1 cylinder.