Hi Bill,
How is the Sabre coming along.
I have been hammering away at one too. Found similar issues with the fit of parts.
Maybe you should have used a proper hammer !
Mine is almost finished it is ready for flight and just needing registration numbers and some more detailing.
I went for a four servo wing and installed a servo in the fin to operate the rudder. A lot of work and I am now thinking that I should have kept it simple and installed full span flaperons and fixed rudder as the installation became quite fiddly.
However I am pleased with the result.
Joe