I´m trying to help someone with his Harley. It is a 97 Harley-Davidson Softail Heritage Classic. What is the specification for the gap on the spark plugs. When I look at the ones he pulled out they didn´t look like the gaps were the same. He didn´t check the gap when he put in the new plugs. It has been sitting for about a year and he is having troubles getting it started and when he does it seems to be running rich. It ran great before he parked it. It has been sitting in the garage. It´s a beautiful bike. He had it customized in Phoenix about a 2 years ago. He wants to sell it.