Ken, your build is really turning out nice!
I am watching with great interest, the covering stage is where I stalled out on mine. I need to get back on it and get it finished and really like the Solartex and Nelsons paint approach. A couple questions if you don't mind.
Did you apply balsarite to the entire air frame before covering?
Does the masking tape come up without lifting the covering from the air frame?
Are you applying the paint with a foam brush?
Are you using the cross-linker in each Coat?
Thanks,
Don