Kitchen sink repeatedly comes loose - any suggestions?

[ShrimpBurrito]

Has anyone else had problems with their kitchen sink coming loose? I've had to remove it a few times over the years, and I tighten the underink clips pretty good (or so I thought). Granted, I can't get to alot of them due to the fact that there is so much stuff under the sink (in my SL model), and even with those I can get to I have to be a contortionist, so maybe that's my problem. The sink usually loosens after a few trips. Also, the clips seem to simply bend as a tighten them, instead of applying pressure, so that's obviously not optimal.

I have flexible supply lines going to the sink, so other than wearing down the cabinet, I guess the only thing I'm worried about is cracking the ABS drain.

Any suggestions? I don't want to bead it down with silicone because I want to be able to get it back out easily.

Thanks,
Dave