[ERA Chas]

You guys are great.
I have already checked/done many of the things you all suggest. I'm in the process of doing the few I haven't.
Tbone, I have already changed springs in my Unilite to no improvement but it's really appreciated.
Undy, the linkage is all mechanical, no cable and I've spent many hours making it friction-free.
Dirt/debris is never an issue on my stuff so that eliminates the easy stuff. BTW, ther are no chokes here.
The throttle shaft/bores will be scrutinized again and Rick and JHV, you make good points to check.
Sincere thanks to all and I'm working my way through all the applicable suggestions.
Thanks all.