I tried the glue tabs on a Johnson JW tank that was badly damaged. I was moderately successful. I pressurized the tank a bit with compressed air. be careful if you do this as it is easy to deform the tank. Apply the pressure slowly.
I ended up not using the tank. It would have needed considerable body filling to make it acceptable.
“The boat house” (Tubs) is the tank restoration expert around here, so search for his posts for amazing results that he produces.
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