I would not think the lifters are your problem I go 1/2 turn, no more...but 3/4 likely wont cause you any problems, whether they were pumped up or not. And it's just a personal preference, but it makes a terrible mess to adjust lifters while the engine is running, and I dont like to make messes. If you adjust like you did, and give a 1/4 to 1/2 turn, you'll be fine.