Stock jet sizes - I just need a ball park figure to start

Hi,
Finishing a 125cc rebuild, WK bike. Keihin 26mm carb, single exhaust to twin cans.
Carb came with no jets so I've found some but the pilot jet had no size stamped on.
Bike idles then dies when I throttle.
I'm looking for a rough guide as to what size jets I should order for tuning a 125cc naked bike on 26mm Keihin carb.
I will buy a set of jets but I don't want to buy 60 - 102 if the sizes are likely to be 150-190. The pilot jets are short jets not long but MJ are standard.
Any suggestions welcome.

 

Is it a cv carb or std slide type? Unsure of pilot size on either but slide carb would be around 96-100, 5mm main jet.

 

It's a cv carb, stutters at full throttle at the moment.