Here is a picture of mine. The slider rails are not exactly the dimension in the plans but very close and are parallel.
EDIT: To answer your question, IMO, you should ensure proper edge distance for the rail fasteners. The canopy will flex to deal with the 1/4" variance.
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines (aka Hoser)
Last edited by Raymo : 08-10-2016 at 04:10 PM.