Personally do not like dplf when used as sealer. I dont like it for a few reasons.
#1 as you found it orange peels
#2 It sands like half dried glue
#3 When dplf is used as a sealer then topcoated directly over it has a nasty habit of dieback. Meaning the topcoat loses gloss.
The only way Ive found to prevent this is to spray the DPLF sealer allow it to sit and cure for a few days. Then come back 2-3 days later sand and paint. This allows the epoxy some time to cure. The epoxy when topcoated directly tends to suck up the solvents in the topcoat later releashing them, thus the reason for dieback.
A 1.4 tip would be a better choice for spraying the DPLF. The 1.4 will break it up better leaving behind a smoother finish.
800 grit seems a tad too light for me. I would step up to 500 grit.
DCC has no problems covering up 500 grit scratches. Plus 500 grit will level that surface faster and better then 800...Eric
