Would be excellent if you could, cheers pal
Covering the threads seems like a plan, just a bit of a ball ache I guess for if/when you come to adjust them on the car?
Ill have a quick look around for the can later.
Also i would follow this procedure.
1) Clean up the threads/coilies
2) Lubricate them well using WD etc... & apply some Copper Grease only on the immediate area where the adjusters will more then likely sit.
3) Get them on the car and setup, once you have them on the car and setup i doubt you will be adjusting them every so often.
4) Cover up the remaining thread in tape etc to keep them clean, simply "peel" off the tape when you need to adjust them in future.
5)
OR buy some coil over protective covers. I had some from Demon Tweeks. Were about £25, but were SO handy in keeping the crap off them.
I had to cut mine up to get a perfect fit tho.