Good Morning! I recently purchased a 1994 HD Hertiage Softail Nostalgia, that I absolutely love, but I knew it was going to need some tinkering. Was previously ridden by a lady who didn't do much riding, but her hubby seemed to maintain the bike's fluids etc well. So I get it home two weeks ago, riding great, but having some problems starting. Put in new battery, new sparks, changed the oil. Started her up this morning, warmed her up...ran beautifully....until I hit 60 mph. Then it would start to stutter and cough a little bit. This only happened at higher speeds, as long as I kept it around 55, no problems. Other oddity was that by the time I got to work (I have a 30+ mile commute) I tested it again, seemed to be ok at 60 but I didn't want to push it. Sounds to me like the carbs may need to be cleaned out, I want to start simple then work my way up. Have been advised to put in sea foam...want to ge some thoughts and opinions. Not a super mechanic...but pretty mechanically inclined...so please excuse me if I ask a 'dumb girl' question not dumb...just learning! Thanks!