Seeking suggestions: rocker screws and nuts stuck Options

[DC_neun_vierzehn]

A kind member @cgnj sent me a spare set of 2.0 of rockers with adjuster screws and nuts. He said he put them through a parts washer before shipping them. I could not get the nuts off the screws so I hit them w/ PB Plaster Lithium Penetrating Grease and let them soak for a couple of nights. They still won't budge. WTH.

Part of the problem is I can't get a great grip on the rocker to maximize leverage, but I'm still getting a lot of muscle into it. They should be coming off with the torque I'm able to put on them. I don't get it.

Anybody ever had these adjuster screws and nuts stuck like this?

Any suggestion on how to break them free?

[914sgofast2]

As noted, use a soft grip vice. First put all the rockers in a small container and cover them with a 50/50 mixture of acetone and ATF and let them soak for an hour or so. Take the rocker out of the mixture and put the rocker in the soft grip vice. Put a six (6) point socket or box wrench on the nut. First give the nut a firm, short twist in the clockwise direction was if tightening the nut, and then turn the nut in the counter-clockwise direction to loosen it. The short jolt in trying to tighten the nut helps free the threads so the nut will unwind easily, at least in my experience.

Should that not work, then my final alternative is to heat the rocker and nut up with a butane torch to make them both expand, and then immediately try to loosen them. But don't overdo it with the heat or you will ruin the rocker arm's heat treating.

[DC_neun_vierzehn]

As noted, use a soft grip vice. First put all the rockers in a small container and cover them with a 50/50 mixture of acetone and ATF and let them soak for an hour or so. Take the rocker out of the mixture and put the rocker in the soft grip vice. Put a six (6) point socket or box wrench on the nut. First give the nut a firm, short twist in the clockwise direction was if tightening the nut, and then turn the nut in the counter-clockwise direction to loosen it. The short jolt in trying to tighten the nut helps free the threads so the nut will unwind easily, at least in my experience.

Should that not work, then my final alternative is to heat the rocker and nut up with a butane torch to make them both expand, and then immediately try to loosen them. But don't overdo it with the heat or you will ruin the rocker arm's heat treating.

@914sgofast2

ATF?

Automatic Transmission Fluid?