[W126 Coupe] Coil spring shims?

[stefansj at canisius.edu]

Hey everyone, I noticed that the only rubber shims offered for the front end are 
23mm. I still think my front end sits high after the H&R's. Can I use a smaller 
shim? such as one of the three options for the rear? Let me know if anyone has 
tried this. thanks, Jas