GE Profile Washer Makes "clicking" noise only during agitator cycle

I have a GE Profile top load washer. It was sitting in storage, unused for about one year. Previous to storage, the unit worked very well. After coming out of storage, the washer makes a loud clicking type noise only during agitation. All other functions work well and seem normal.

Clicking is the best way I can describe the noise. At least for now, it does not seem to inhibit the functionality. It has a consistent rhythm - 1,2,3....1,2,3,,,1,2,3...

Any suggestions on where to start?

Thanks

Jim