Not sure the diagram will help.
“Spring Loaded Flow Controls”……….Not sure if you’re talking about the high and low carb adjustment needles.?
If the carb is gunked up with old tar like gas, the needles can bind up. I would heat with a hair blow dryer
on high heat for a while and try to loosen the needles. Have you removed the packing nuts from the needles first?
As long as the float arms aren’t corroded, bent, etc., and will perform their function, it should be okay.
Not sure where you’re at, but if you’re near a local chapter, perhaps you can get some hands on help.
Prepare to be boarded!