kenmore gas orifice specs to return LP spuds to NG size

[LB]

 I have not been able to find the specs on the sizing lp spuds back to natural gas size . was hoping to get this done at machine shop but need correct specs. thank you for the help. I know the lp spud parts are actually GE the 2 left burner spuds part for NG is WB28K0019, WB28K0023,WB28K0018

Model JGBP30GEPGAD

[JWWebster]

If you had a set of orifice bits you would measure the size of the hole, then plug the spuds and re-drill them 10 sizes smaller. If the spuds are too small to plug I just place them in a vise and carefully peen the holes closed, then re-drill.

[jumptrout51]

http://appliancejunk.com/ge/cookingproduct/31-9008.pdf
What you need is in here.

[jumptrout51]

If you are good at these things and have the right size drill bits you could do it yourself.