59A adjustable lifters having wear problem

[flatman]

Valves were getting increasingly noisy. When re-adjusting lifters, found some

had uneven wear. Turning lifter in the bore would yield a different reading. More than 10 thousandths in some cases. Lifters are obviously shot. If i replace lifters, can i get away with not changing cam....Also where should i look for adjustable lifters. I know some people say the new ones have adjusters that wont stay put. thanks for any advice