The spraying in different directions is a cause from the tip of the urethra being compressed too hard in the vacuum. When you roll the glans in the palms, it relaxes the urethra at the tip of the glans. The extra twisting of the cap/cup onto the glans doesn't do anything to the compression of the urethra. It happens to me too at the start when I use the ADS.
If palm rolling does work, pay attention to the directions of the spraying. Does the stream splits into different directions into small streams and firing off like a fan? Or does the stream fires off one direction but only a small portion splits off in a different direction?
The fan shape spraying is caused by directional compression. That means the glans is indeed being squeezed too hard in one direction, such as overly twisted into the cup. The trick is once you have the penis sleeve on, squeeze all the blood out of the glans before placing on the cup. This prevent over pressurizing of the glans and cause the urethra to have a directional compression.
When the dream is straight most of the time, but there is a small stream splits off elsewhere, part of the urethra is compressed. Try the method above, but, also takes your thumb and index fingers to quickly squeeze the tip of the urethra at the top and bottom, then side to side a couple of times. It takes less than 3 seconds. This is to release any urethra adhesion from the long hour of compressive state.
Like I said, it happens in the beginning, but goes away after two months of ADS usage. It was laughing at myself at times for accidentally peeing on may pants' sleeves.