Orchard supply brand semi gloss works great for small parts. For $3 bucks a can it works great. Try it for $3 bucks if you don't like it you didn't lose much.
__________________
1964 Chevelle SS,Ls1,T56,DSE 3 front&rear
1964 El Camino
1971 Chevelle SS
1971 Camaro
Being a Krylon connoisseur for years the newest version of their semi-flat hasn't impressed me. The initial coverage is weak and very susceptible to runs.
X-O Rust Professional satin is another product I've used with good results but it dries and cures slow. I found it at the local Wilco Farm store.
That said I have a can of Duplicolor I'm going to experiment with.