PurpleHaze Have you checked your oil for metal? You might have something beginning to fail internally. Any odd noises? Is it missing? If it just feels like a loss of power, that can be a number of things, including carb settings, fuel starvation at higher rpms, vacuum leak(s), etc. Does it lose power under acceleration or at cruising? Does it pull better at the beginning of rpm range or is it higher up (e.g. below 3k rpm it's great, then above that it loses power)?
Maybe you can take a video of it and post it?
