I am a DIY'e and I do not have the factory spring compressor but, I do have access to a lift. I know somebody in this forum has the "factory" spring compressor for rent that way, you can try different set ups. It is NOT that hard to change the springs yourself ( I bought mine used here, in the classified section) but IT IS potentially dangerous. I just took my sweet time. That may be one of your alternatives...Good luck!
On a different note, minman are those wheel the bellos? what size?Tires? how happy are you with them?
Thanks!

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J.H.
'86 300E