Help with steering problem

[submoa]

I bought a used boat this year. It runs great but have found a pretty big problem. When I open it up or get much past half throddle I can't turn left. i hear a clicking noise under the steering column. I fish only and rarely use the bigger motor 115 Suzuki on 18 1/2 foot Starcraft pro walleye. Since I don't really use the motor, just the kicker motor it's not a dire emergency but would like to fire up the big one and get off the lake in a hurry if I had too.

Does anyone have any idea what this problem could be?
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