2001 GP SE 3.1 litre engine. not always, but at times, when I go to start it, it'll crank for 2-3 seconds and not "catch" I have to re-crank and then starts. Am I not keeping the starter engaged long enough? after start up on second crank, engine runs fine and no problems at all..no SES light on....no codes set. I run 87 octane gas.......should I bump up to 93? I know this may sound petty....I just wonder why I should have to crank the engine twice (sometimes) to have it start. Thanks.

Grand Prix's Rock:)