PVS plugs

I've got a 99 202 with a '03 225 EFI, currently running a 26 TXP OT/4 on a 15" rapid jack. The prop has the 4 PVS holes drilled and I started off with medium plugs in each hole. Major prop slippage in the hole shot....have to really feather the throttle on take-off to get it up on plane.

Been searching all over town for some small plugs but haven't found any, so today I bought 4 solids, thinking maybe I could mix and match the solids with the mediums to get the right combo.

Any suggestions on where to start that might save me some time??