Stylus cleaner, the Audio Technica AT 607a stylus brush and fluid works great, it dries quickly, and, it is inexpensive. Cartridge demagnetizing. It works with moving coil cartridges. It works so well it has to be seen to be believed. Do not demagnetize a moving magnet cartridge as you will ruin it. Your Linn Adikt cartridge is a moving magnet cartridge, Do not demagnetize it.
Check tracking force and the anti skate setting. Anti skate should no more than the tracking force, I believe it should be a little less than the tracking force.