Caps for idle 1978 GL1000 adjustment screws

[jsphcarswell]

Any ideas on replacement caps/covers for GL1000 idle mixture screws? Mine are long gone and something makes me think they may be a good idea to keep rain and/or junk out of there.
I could be persuaded to ignore this detail as well...

 

[pidjones]

Ignore as long as their o-rings are good.