IVE BEEN ON A SITE REVIEW ABOUT ST24. IT SAYS ON THIS SITE THE ONLY PROBLEM THEY FOUND WAS THE WATER PUMP PROPELLER IS MADE OF PLASTIC AND IF IT SNAPS IT F**KS UP THE HEAD. BASICALLY YOU CAN CHANGE IT FOR THE BETTER PUMP AND THIS WILL STOP IT FROM HAPPENING. IS THIS TRUE AND WHERE DO I GO FOR THE UPGRADE.
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