Egad , you're gonna hate me .
I won't spend any money on anyone's mask kits .Why ? Well , I am perfectly okay with doing what I have been doing since they invented white Electrical tape . I place the tape on the canopy in a shield that covers the whole thing .Then I burnish it down well , Cut off what goes and spray away .
I have used this method for over thirty years without failure or bad masking jobs . To me it's simpler for 12 thumbs or 60 index digits ( Me ) to get it right . And it's a heckuva lot cheaper !
Use them if you must . But I will stay with this tried and proven method ! Tanker - Builder