Holding vice to table advice

[lateAtNight]

Hey everyone,
I need some advice on how to clamp my vice to my milling table.

I bought a "Precision Tool Vice Type 2" from Arc Euro Trade for my little milling machine and eventually got a clamping kit to go with. Links for vice and clamps (24 pc kit). Sadly the hold down clamps they sell are for the smaller vices.

My first thought that was I should use the clamping bars to fit in-between the grooves that run up the side of the vice but when the clapping kit arrived I realised the clamping bars that come with the kit are too fat to fit in the groves. I phoned Arc to ask and they said to just use the bolts and t nuts to hold the vice to the table.

Its take me a while to find some free time to have a look, but as I suspected this is completely impractical... the bolts are also too fat to fit in the groves properly and to get them to make any sort of contact they need to go in at an angle. When I try to tighten them they just slip right off the vice. Maybe I misunderstood them and if so does anyone have any suggestions on how to actually hold this vice down? I wonder why this vice does't have a break in the groves so that the bolt can pass through and then bolt down that way... every other vice does!

Picture attached at my attempt to do what Arc was saying... Any help much appreciated.

David.