The Limbsaver grind to fits may seem thicker, but they're actually just softer, I just measured a couple small grind to fit which fit H&R stocks and a Decelarator, they're all 1.08" thick. I don't have any mediums or large, they might be thicker tho, but whether they can be cut down to fit a youth stock I don't know. A few of the Brownell's spacers with the grind to fit pad of your choice would give you the 2" additional length. I second the recommendation of the slip-on over the factory youth pad, that combination works for me on the 405 Win which has a youth Topper Deluxe Classic stock on it.
Perhaps a better route would be to trade the youth stock for an adult in the H&R WTT forum, then go from there if it's too short, Limbsaver makes a prefitted pad for the synthetic adult monte carlo stocks, I have a couple of them, they work well on heavy kickers.
Tim
