Thanks Dave,

but I can say that I'm still troubled since my engine is 0.7 oz (20 grams) heavier than yours so that makes your net additional weight 1.8 oz (50 grams) which compared to my 7.1 oz (200 grams) is alot less. Should I be troubled? I've already strapped my rx battery to the inside of the firewall and have no other components to shift forward.
Maybe I'm making too much of a fuss over it, so I might as well live with it.