Well, the 22 and 25 are 240g and 246g respectively and I’ll assume the #6 iron is around standard weight of 261 grams. You take the 4 gram weights out and your at 236 and 240. That means you will need 25 grams for the 22 degree and 21 grams for the 25 degree. So, you can’t get to where you need to be with the heaviest weight we have, which is 14 grams. You could add the 14 gram weight and fill the heads up with head tac to get the additional weight you would need, but I wouldn’t recommend adding that much head tac. Changing out the 4 gram weight for the 14 g is no problem, but again you’re not going to get anywhere near the D2 swingweight at 37.5″ #6 iron length. This assumes you are using standard weight grips. If you use a really light grip, like 25 grams,with the 14 gram weight you could get to approx. C8 on the 22 and D1 on the 25 degree. This also assumes the shaft is 75-77 grams.