Carb throat balance when tuning now a rebuild saga !, those with Zenith carbs can learn from my bad fortune ? Options

[porschetub]

Doing a tune on my Zeniths ,cant find an exact rpm range and done a ton of research ;
Bruce Anderson mentioned 1800 in his book,
Factory says 1000 in the gary.suggate site factory manual,
Haynes manual tells us 1000.
So far I have tuned throats @ idle ,1000rpm ,1400 and 1800 on hand throttle and strangely I get the same balance any way ?.
Now thinking its not an issue but would appreciate feedback from 6yl guys with carbs,TIA,cheers

[porschetub]

Well appears my carb rebuild is a slippery slope with all the (IMG:style_emoticons/default/stromberg.gif) rapidly sliding down to me (IMG:style_emoticons/default/headbang.gif) .
Carb clean wasn't what I was told and due to the solvent used I got a fair amount of surface corrosion on metal parts so suspect it had a strong salt content !!!.
This result has caused a reclean of most parts due to scale formation, pissed off factor is high in the scale which I don't need.
Then just to add further drama one fuel pump noozle was leaking in the carb body after doing pump test, pulled it and found a hairline crack above the groove for the sealing ring
not able to repair !!.
Really hope my WTB gets a response as not sure where to head then as a bit screwed @ the moment (IMG:style_emoticons/default/sad.gif) .
Cheers.