Alas Violet, ACEI's are good drugs, no denying it...and CHEAP to boot.
But for those of us who cough our heads off, they just aren't an option.
Look at the upside: anyone who does well on an ACE inhibitor will eventually form other chemical pathways to make Angiotensin-2 and need something different...usually within a year! You are just facing the conundrum a little early
Try some extra calcium and see if it doesn't help with the calf cramps.