WARNING: two screw diameters depending on the reel
Some reels have the same shift housing 110B-15KG but needed a thinner screw (which implies Penn CHANGED the shift housing but kept the part number the same)
On 30S and 50VSW Older Version : (2) 23-15KG screws are used to secure the 24N-30S handle, both ends of the handle knob will be silver.
NOTE: Later reels use 23-15KG has a thread diameter of 1/8" or .012".
ON SOME EARLIER REELS
39-1 screw is needed on some of the early run reels
Example: On the Pre-50VSW first run reels, they used a thinner diameter threading 3/32" (.094) and that screw is a 39-1.
Measure threads if you have the shift housing version of the 50VSW, 70VS-Before because it's possible to have an early run reel with the thinner screw in the shift housing.
NOTE: 70 Big Game Special definitely CANNOT use 23-15KG, it needs the 39-1 screw