You can try removing the combo switch from the column and cleaning the contacts, but most of this assy is plastic and the pivot points do wear down. If you want to be free of future problems, bit the bullet and replace the switch. Try partshop, think it's about $175, but I could be wrong. These things do wear out, and if you are going to go to all the trouble of breaking down the top of the steering column, get it right the first time...unless, you like to take things apart...

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Jeff Lawrence
1989 300e
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.