Bill..., it’s probably a little too late now, but it’s usually best to start cast more forward of the comb, in the area of where the panels would end, or even before that, such as just behind the tang. Also, 1/4” is pretty healthy cast. I’m thinking you’ll probably have to work with what you have, and the only way I can see is to bend the guard. You typically have to do that to some degree with a cast anyway, but it works a little easier with the cast more forward than what you have, and with a little less aggressive cast.
Ed