Chassis clamps

Hi

I just bought a used Triton 2000 and found that the chassis clamps to hold the saw in place just slide on off, no thread hold whatsoever.

I read that somebody re-tapped them for a larger screw, and wanted to ask if i could use the screw itself as a tap as i do not have a tap and die set.

Or is there a better solution?

thanks Arif