Needle skips along records. - Sony Audio Players & Recorders

try increasing stylus (needle) weight. this is done by turning the tone arm counterweight clock wise when viewed from end.

"Let's go to the hop."
If the tone arm is 'hopping'; that is, bouncing up and down. Either the turntable platter or the motor itself is not moving freely and causing a vibration.
If it is just 'skipping the needle is not going down into the groove on the record, There may be a build up of dust or lint on the needle keeping it from following the groove, therefore it ;skips'.
Also the needle tip may be worn. If it is skipping, you can try cleaning the needle with a soft makeup brush. brush gently back and forth, (the way the groove in the record goes.) NEVER SIDE TO SIDE.

try increasing/decreasing the needle thread tension for the added material thickness
use scrap material until you get it right

your tone arm needs rebalancing most likely

https://kb.wisc.edu/wsum/page.php?id=20270
Turntables Balancing Tonearm

If you lower the tonearm to the record surface, and it just slides towards the center, chances are the stylus(needle) is either broken or covered with dust. Clean and inspect. For more information, please visit my website at audioserviceclinic.com. Thank you.

the needle bar is not hollow,
Skipped stitches
1. The needle is not inserted correctly
Remove needle & reinsert needle( flat side towards the back of machine)
2. The needle is damaged
replace with new needle
3. The wrong size needle is being used
Choose a needle to suit the thread & fabric
4. The foot not attached correctly
Check & attach correctly

if its skipping ahead Almost like the needle is just gliding across the Record. It means your needle is bent, dirty or broken, Take it off and look at it closely.

A needle is a precision part. Look to see if the needle has a conical point descending from the cartridge needle carrier. If not, replace the needle.
*Always protect the needle while you adjust things!
Pressure is essential for the needle to track. Turn the weight down until the needle just floats above the record. Zero the weight by turning just the weight indicator, not the weight. Now turn the weight to add 1.2 to 1.5 grams. (Always use the manufacturer's recommended weight if different!)
A level surface is important. Make sure the turntable is level.
Test the arm bearings:
Adjust the weight until the arm floats. With a feather, gently push the arm towards the center. Now gently push it back. The arm should move smoothly with no hesitation and easily. Reset the weight to 1.5 grams or less.
If your cabinet is moving when you walk around, the records will skip. Find a different place for the turntable or don't walk around. In severe cases, raise the weight to 1.75 to 2 grams, but this wears the needle fast an can cause distortion.

The Fisher Price record player has a device that prevented kids from pressing the needle down and sctratching the record. If you look at the cartridge where the needle is inserted, you will see that it floats up and down. The problem is that this keeps the needle from having enough pressure to play the record. Pennies just make the cartridge recede further into the arm. If you wedge something above the cartridge, the needle won't float and the it will play your records. I've had four of these and none of them worked until I figured this out.