[KobraKarl]

Micheal , thanks for the check list.........
both carbs had warped bodies which i trued carefully with a fine tooth file , I marked primary and secondary components lightly with an awl, I also rebuilt the two carbs in sequence to avoid any confusion,my shop compressor does have an inline filter, I did not touch the secondary set screw, I just went down and took a look,the vac. secondary apears to be open maybe a "curly red one",primary's are linkage adjusted.

Now if i didnt make this very clear, it went like this; after everything was bolted back up (exept cleaners) I started it up and played with the floats,idle screws,and linkage until she was running pretty nice. Went for a 10 mile shake down and she ran well. 3 or 4 days later the S&H come in the mail ,i bolt them on and the rpm's wont come down when she is warm............ so i just turn down the primary idle screw and again she runs fine.

I just couldnt understand the "apparent"correlation. After all this feed back I'm starting to wonder if maybe the idle cam stuck or the distributor stuck or some other "coincidental" condition.
I was going to experiment today , but went to the seattle roadster show instead..............several FFR an SPF and one original 289 in FIA format.