I also did not use any tapes on the inside. I filled the gaps with flox and from there it was all Super Fil. I did use the same method of taping and sanding the Super Fil then taping further into the window and sanding to smooth before painting. But so far, mine has only been up to about 1/4 MPH.
See N64KR at http://KR-Builder.org - Then click on the pics There is a time for building and a time for FLYING and the time for building has expired. Daniel R. Heath - Columbia, SC See you in Mt. Vernon - 2005 - KR Gathering