Oops, maybe I should have posted here instead of in the Car Seats forum? Sorry, dumb newbie here. Anyway, I did get a good lap-shoulder belt install in my 2005 Honda CR-V:
link.
I was not at all successful with DH's 1996 Honda Prelude. (However, I doubt anyone here has had to deal with one of those. It is not exactly a family car, and apparently they're quite rare now.
) When the seat belt was buckled, the wide end of the latch plate got stuck at the belt path entry, so it couldn't be tightened enough. A full twist of the buckle end webbing to try to move the latch plate away from the seat didn't significantly improve the situation.
Carolyn