Originally Posted by psrujak
I had the same problem when I picked it up from the dealer. I just drilled a few more holes in the wood strip where the other screws were and put in dry wall screws. We just came back from a week long trip and everything is still tight. Would not lean on it to much.
Just did the same thing. I predrilled then put in six more screws. This seems to have solved the problem. Initially I was going to try to locate floor joists then put the additional screws in those locations, but since the factory rep indicated they just put them in at random, I thought I'd try this first.
It's interesting that there were clearly six screws that had been put in by the factory. My best guess is that one of two things happened: after the island was screwed onto the floor, during subsequent work it somehow got pushed or knocked in such a way that the screws loosened or lost their seating in the luan. However I think the more likely explanation is that the screws were put in with a power drill or screwdriver and the power was applied a few seconds too long so that they spun freely. For anyone who might be interested strengthening the attachment of the base to the floor with some additional screws, I'd suggest (a) predrilling to avoid splitting the wood strip, and (b) screwing them in by hand, and stopping as soon as each screw is fully in.
It feels pretty good now, but echoing psrujak's comment, I think there'll still be a need with the way this is attached, to be a bit careful about how much pressure is put on front or back of the counter.