these are relatively inexpensive
i would replace
M35-661 | M35 Series Passenger Side 38" Inch Front Axle Shaft Ball Joint Style
Passenger Side 38" Front Axle Shaft Ball Joint Style for M35, M35A1, M35A2, M35A3, M36, M36A1, M36A2, M36A3,M275, M109, M109A1, M109A3, M109A4 2 ½ Ton Trucks
NSN #...