I have several of these double wides to paint the interior of. I have already done 2 of them and so far they have taken a primer coat (bond coat primer) and 2 complete finish coats to cover. (including cutting in) I am brushing and rolling so I have to completely paint these things three times. The paneling is dark paneling with grooves. Any short cuts, or a way that I can get these to cover with one coat of finish?