Swing weight and lie changes will be minimal. The other option is to cut 1/2 inch off of the butt end. Most of us wouldn’t notice a small change, but that isn’t all of us. A shop that can check swing weight can compare both shafts in the head to let you know.

The additional one half inch will add 3 swing weight points and 1 degree upright in playing lie, however, shaft weight differences will also change swing weight- 1 less swing point for each 9 grams in lighter shaft weight so there we some offset if the Accura shaft is lighter. I would worry about the greater playing lie unless it becomes an issue.

Joseph M@ the Accra shaft weight is 66g so 6g more than my tensei hybrid shaft and 0.5 inch inch longer. I try the standard lie otherwise 1* upright. Standard weight in my 818h1 is 14g, should i change it to 12g?

With the additional 1/2 inch and additional 6 grams in shaft weight you are at 3.5+ additional swing points so if you can I would go with the 10g weight to lower the swingweight 2 point. If you absolutely need to go lower you could look at a heavier grip- 5 grams= 1 swing weight point. Hope this helps.

In America we are allowed to try any length, lie, weight we please. Plug it in and try it out. I like to monkey around with my clubs now and then so over the years I have swapped several shafts with my woods and hybrids, and tried going 1/2" up or down. The first thing I did was get a few extra weights so I can fine tune for whatever combo works best. You can find aftermarket ones that come in sets. If it doesn't feel right, you can try a lighter weight in the head to adjust the swing weight for the added 1/2". If it still doesn't work for you, choke down 1/2" and try both weights, before deciding to cut the shaft. Also, keep the original shaft as a reference and as a back-up if the new one just doesn't work out.