Have a new to me 98 Road Star Silverado 1600. Has just user 24K miles. Looks to me like different slip on exhaust tips, but otherwise stock. I've had it for about 1000 miles now, and it has had three or four occurrences where the bike has not wanted to turn over. Found the last time (this past weekend) the cylinders were full of gas when parked. Last rode it about 36 hrs prior, in about 70° temps. After I pulled the plugs and dried out cylinders, it runs like a top. Anybody got ideas??? Thanks.