You sound like a real active guy. As a practicing mechanic and an active ballroom dancer at 70 -- you are to be envied. I have read that dancing is perhaps the very best possible activity to prevent dementia in later life. This is because it provides a rich coordinated combination of mental and physical stimulation with social interaction, music listening and a sense of mastery. Keep it up!
My lady life partner of 28 years also takes Lisinipril with good BP control, but we are researching its side effects. Thanks for your posting.
Try taking it later in the afternoon or early evening. I started doing that and have been much more alert during the day.