My 94 platform was the same. I sent to Teak world to get a slat fixed and refurbed and they told me that the wood was just to thin to refurb again and they suggested I get a replacement. Sanding removes thickness. So I got a used one off a newer boat from them and no flexing now.
If its not a competition ski boat, its always second best.
1994 MasterCraft ProStar 205
275 HP 350 Chevy Indmar
Monster Tower & PerfectPass
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"In my many years I have come to a conclusion that one useless man is a shame, two is a law firm and three or more is a congress." - John Adams