craps bet probability

I am trying a new strategy to play the 6/7/8 as winners by doing the following (can double/tripple of course depending on bankroll):

6 on 6 & 8
41 on no 10
5 on hardway 10

Only time I see a loss is when a 6/4 is rolled. Over the long haul seems to work out on free online casinos but what does the math say. A few 6/4 (or 3/1 if you go no 4) close together drops you down but think I can manage roughly 6 hits on 6/8 before an easy 10 to stay on top?

No 10 active on come out so 7 on comeout gets me 14 and I am not a loser on 2/3/12.
Hard 10 I lose 6
easy 10 I lose 46
7 out wins 2
6/8 on none comeout wins 7

Thanks

i had a simulation up to 15 tens and got 14 easy 10s so dropped the hardway to make more on the 7.

how do you calculate house edge on this? is it 43 cents per resolution?