Steering universal joint

I have just remembered that I didn't lubricate on the universal joints at the connective portion between steering post and gear box in-put shaft, the dust cover boots on the both ends had been lost already when I inspected them over two years ago and the replacement stock parts has rusted in the joint needle bearing. So, careful checking would be performed tomorrow morning and Chrome-Molybdenum grease splay would be done praying that no damage would not be found there? In the worst case, unburdening fuel tank task would be required if a replacement task of the universal joint part is required because of too much backlash in the connections.