Grips for clipons

I bought some new grips for my track bike, it’s got a set of race style clip ons, I bought standard grips, 125mm long open ended but they are too loose on the bars.

When I took the original grips off there’s a load of gaffa tape wrapped around the bar to make it thicker, surely this isn’t right ? The reason I bought new grips is because the existing ones are moving slightly on the bars which doesn’t feel great but I’ve obviously found out why.

The bars are 22.5mm diameter - is this a normal size ? Do I need a specific type of grip ?

Thanks

IIRC standard handlebars are 7/8" Steve. Thats 22.22mm