Thank you Konrad and Ken for your kind comments. Most appreciated!
Regarding the conversions Ken, You are spot on. I took 2 "At the Ready" from the ROT-03 set and 2 "Kneeling Firing" from the ROT-04 set. Then took off the bases of the "Kneeling Firing" and cut all the figures in half at the waist.
These when re-assembled, gave me 2 "Kneeling at the Ready" and 2 "new" "Standing Firing" figures. The Bareheaded figures had their hats cut off and I sculpted the new top half of their heads. The techniques I used were pretty much as I described in the Grenadier conversions.
Cheers, Roy.
PS Here's a couple of pics showing the figures a little more clearly: