The problem is not with the canopy but with the glareshield.  We tried all kinds of mods and finally just made a new glareshield from a mold.  Others have performed major surgery on their stock glareshields and got them to fit.  We talked to Lancair three years ago when we became aware of the problem and offered them our mold to copy.  Lanciar insisted that there was not problem with their glareshield so we dropped it but have been making glareshields from our mold for other Legacy builders.  I don't know whether the glareshields that Lancair is currently supplying fit but the ones delivered with at least the first 100 kits did not.  I don't think there is any mod that can reasonably be made to the canopy to correct the problem.

One other thing to think about.  If you designed your instrument panel based on the room available underneath the stock glareshield, you need to take a hard look at your top row of boxes.  If they were a marginal fit, they will not fit under a glareshield that will fit under the canopy.