Think about this, your adjust thread is probably 24tpi, one full turn of preload will be approximately .040", 3/4 of a turn is .030". "Way taller" to me seems considerably more than .030". So even if the lifter maxed out that's all it could raise it.
Slack in the valve train is what usually makes noise.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
